Climate and average weather in San Angelo
In San Angelo, the summers are sweltering, fairly dry, and mostly clear and the winters are mild and mostly clear.
Over the course of the year, the temperature in San Angelo typically varies from 36°F to 95°F, and is rarely below 25°F or above 101°F. July is the hottest month of the year, while January is the coldest.
Based on the travel score, the best times of year to visit San Angelo for warm-weather activities are from mid February to early May and late September to early December.
- Hottest
- Jul
- 95°
- Coldest
- Jan
- 36°
- Wettest
- May
- 3.4 in
- Driest
- Jan
- 1.1 in
- Rain / yr
- 22.0 in
- 71 wet days
- Daylight
- 9.9–14.1 h
- shortest–longest
- Elevation
- 1,844 ft
- 31.5°N
- Clearest
- Oct
- 34% cloud
San Angelo is city in and county seat of Tom Green County, Texas, United States.
- Density
- 620/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
San Angelo weather by month, at a glance
The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.
Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around mid February to early May.
Temperature through the year
Daily average highs and lows in San Angelo, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
The hot season lasts 4.2 months, from May 16 to September 21, with daily high temperatures above 86°F. The hottest month of the year in San Angelo is July, with an average high of 95°F and low of 73°F.
The cool season lasts 3.0 months, from November 23 to February 20, with daily high temperatures below 65°F. The coldest month of the year in San Angelo is January, with an average low of 36°F and high of 59°F.
Days typically run about 22°F warmer than nights year-round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 59 | 64 | 71 | 79 | 86 | 92 | 95 | 94 | 87 | 78 | 67 | 60 |
| Avg low (°F) | 36 | 40 | 47 | 55 | 63 | 71 | 73 | 73 | 66 | 56 | 45 | 37 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| Jan | 59 | 36 |
| Feb | 64 | 40 |
| Mar | 71 | 47 |
| Apr | 79 | 55 |
| May | 86 | 63 |
| Jun | 92 | 71 |
| Jul | 95 | 73 |
| Aug | 94 | 73 |
| Sep | 87 | 66 |
| Oct | 78 | 56 |
| Nov | 67 | 45 |
| Dec | 60 | 37 |
How hot and cold San Angelo really feels
The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.
On the hottest afternoons, once humidity is folded in, San Angelo feels like about 97°F (around August 2). About 99 days a year carry some heat stress, peaking in August.
On the coldest nights, wind chill pulls the feels-like down to about 29°F (around January 5), with roughly 63 freezing days a year (feels-like at or below 32°F), worst in January.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels-like high (°F) | 59 | 64 | 71 | 79 | 86 | 93 | 96 | 95 | 87 | 78 | 67 | 60 |
| Air high (°F) | 59 | 64 | 71 | 79 | 86 | 92 | 95 | 94 | 87 | 78 | 67 | 60 |
| Feels-like low (°F) | 29 | 34 | 43 | 55 | 63 | 71 | 73 | 73 | 66 | 56 | 40 | 31 |
| Air low (°F) | 36 | 40 | 47 | 55 | 63 | 71 | 73 | 73 | 66 | 56 | 45 | 37 |
| Feels-like high (°F) | Air high (°F) | Feels-like low (°F) | Air low (°F) | |
|---|---|---|---|---|
| Jan | 59 | 59 | 29 | 36 |
| Feb | 64 | 64 | 34 | 40 |
| Mar | 71 | 71 | 43 | 47 |
| Apr | 79 | 79 | 55 | 55 |
| May | 86 | 86 | 63 | 63 |
| Jun | 93 | 92 | 71 | 71 |
| Jul | 96 | 95 | 73 | 73 |
| Aug | 95 | 94 | 73 | 73 |
| Sep | 87 | 87 | 66 | 66 |
| Oct | 78 | 78 | 56 | 56 |
| Nov | 67 | 67 | 40 | 45 |
| Dec | 60 | 60 | 31 | 37 |
Average hourly temperature in San Angelo
A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on July afternoons, near 95°F, and coldest before dawn in January, near 36°F.
San Angelo weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 59° / 36° | 1.1 | 4.1 | 0.6 | 10.2 | 5.4 |
| Feb | 64° / 40° | 1.3 | 5 | 0.4 | 10.9 | 6.5 |
| Mar | 71° / 47° | 1.9 | 5.8 | 0 | 11.8 | 7.5 |
| Apr | 79° / 55° | 2.1 | 5.9 | 0 | 12.7 | 7.6 |
| May | 86° / 63° | 3.4 | 10 | 0 | 13.6 | 5.2 |
| Jun | 92° / 71° | 2.3 | 7.6 | 0 | 14 | 3.7 |
| Jul | 95° / 73° | 1.3 | 5.4 | 0 | 13.8 | 3.0 |
| Aug | 94° / 73° | 1.6 | 6 | 0 | 13.1 | 3.2 |
| Sep | 87° / 66° | 2.1 | 6 | 0 | 12.2 | 5.3 |
| Oct | 78° / 56° | 2.3 | 6 | 0 | 11.2 | 7.7 |
| Nov | 67° / 45° | 1.4 | 4.3 | 0.2 | 10.4 | 7.3 |
| Dec | 60° / 37° | 1.4 | 4.8 | 0.5 | 10 | 5.6 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
San Angelo gets about 22.0 in of precipitation a year. On a typical day the chance of rain is some rain, but that rises and falls sharply with the seasons.
The wetter season lasts 2.8 months, from around Apr 15 to Jul 7, peaking in May at about 32% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jan 11.
May is the wettest month by volume, with 3.4 in over about 10 wet days; January is the driest, with 1.1 in.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 13 | 18 | 19 | 21 | 31 | 26 | 17 | 20 | 20 | 19 | 15 | 15 |
| Rain days | 4 | 5 | 6 | 6 | 10 | 8 | 5 | 6 | 6 | 6 | 4 | 5 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 13 | 4 |
| Feb | 18 | 5 |
| Mar | 19 | 6 |
| Apr | 21 | 6 |
| May | 31 | 10 |
| Jun | 26 | 8 |
| Jul | 17 | 5 |
| Aug | 20 | 6 |
| Sep | 20 | 6 |
| Oct | 19 | 6 |
| Nov | 15 | 4 |
| Dec | 15 | 5 |
Monthly rainfall
Over a full year, San Angelo collects about 22.0 in of rain across 71 wet days — roughly 1.8 in in an average month.
It doesn’t fall evenly. May is the wettest month with 3.4 in, while January is the driest at just 1.1 in. The three wettest months alone bring about 36% of the year’s total, and some of the cold-season precipitation falls as snow.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (in) | 1.1 | 1.3 | 1.9 | 2.1 | 3.4 | 2.3 | 1.3 | 1.6 | 2.1 | 2.3 | 1.4 | 1.4 |
| Rain days | 4 | 5 | 6 | 6 | 10 | 8 | 5 | 6 | 6 | 6 | 4 | 5 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Rainfall (in) | Rain days | Snow days | |
|---|---|---|---|
| Jan | 1.1 | 4 | 1 |
| Feb | 1.3 | 5 | 0 |
| Mar | 1.9 | 6 | 0 |
| Apr | 2.1 | 6 | 0 |
| May | 3.4 | 10 | 0 |
| Jun | 2.3 | 8 | 0 |
| Jul | 1.3 | 5 | 0 |
| Aug | 1.6 | 6 | 0 |
| Sep | 2.1 | 6 | 0 |
| Oct | 2.3 | 6 | 0 |
| Nov | 1.4 | 4 | 0 |
| Dec | 1.4 | 5 | 1 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In San Angelo, the average share of the sky covered by clouds shows moderate seasonal variation over the course of the year.
The clearer part of the year begins around May 29 and lasts for 5.1 months, ending around October 29. The clearest month is July, when the sky is clear, mostly clear, or partly cloudy 80% of the time on average.
The cloudier part of the year begins around October 30 and lasts for 5.6 months, ending around April 17. The cloudiest month is February, when it is overcast or mostly cloudy 40% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 63 | 60 | 61 | 67 | 66 | 76 | 80 | 76 | 73 | 74 | 67 | 64 |
| Cloudier (%) | 37 | 40 | 39 | 33 | 34 | 24 | 20 | 24 | 27 | 26 | 33 | 36 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 63 | 37 |
| Feb | 60 | 40 |
| Mar | 61 | 39 |
| Apr | 67 | 33 |
| May | 66 | 34 |
| Jun | 76 | 24 |
| Jul | 80 | 20 |
| Aug | 76 | 24 |
| Sep | 73 | 27 |
| Oct | 74 | 26 |
| Nov | 67 | 33 |
| Dec | 64 | 36 |
Daylight, sunrise and sunset
Hours of daylight through the year, with sunrise and sunset times.
The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around June 21, brings about 14 h 06 min of light; the shortest, around December 20, only 9 h 54 min — a swing of roughly 4 h 12 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 10.2 | 10.9 | 11.8 | 12.7 | 13.6 | 14.0 | 13.8 | 13.1 | 12.2 | 11.2 | 10.4 | 10.0 |
| Sunrise (AM) | 7:46 | 7:31 | 6:59 | 6:19 | 5:50 | 5:41 | 5:51 | 6:11 | 6:30 | 6:50 | 7:16 | 7:39 |
| Sunset (PM) | 5:56 | 6:22 | 6:44 | 7:05 | 7:26 | 7:43 | 7:43 | 7:21 | 6:42 | 6:03 | 5:38 | 5:37 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 10.2 | 7:46 | 5:56 |
| Feb | 10.9 | 7:31 | 6:22 |
| Mar | 11.8 | 6:59 | 6:44 |
| Apr | 12.7 | 6:19 | 7:05 |
| May | 13.6 | 5:50 | 7:26 |
| Jun | 14.0 | 5:41 | 7:43 |
| Jul | 13.8 | 5:51 | 7:43 |
| Aug | 13.1 | 6:11 | 7:21 |
| Sep | 12.2 | 6:30 | 6:42 |
| Oct | 11.2 | 6:50 | 6:03 |
| Nov | 10.4 | 7:16 | 5:38 |
| Dec | 10.0 | 7:39 | 5:37 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
San Angelo averages about 17 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 14 and 20 days.
The sunnier stretch runs 2.3 months, from around Sep 18 to Nov 27. The sunniest month is October, with roughly 19 sunny days (bright).
The greyest month is March, down near 15 sunny days — about 22% fewer than the October peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 16 | 13 | 15 | 16 | 16 | 17 | 19 | 18 | 17 | 19 | 17 | 16 |
| Sky | Bright | Mixed | Mixed | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Sunny days | Sky | |
|---|---|---|
| Jan | 16 | Bright |
| Feb | 13 | Mixed |
| Mar | 15 | Mixed |
| Apr | 16 | Bright |
| May | 16 | Bright |
| Jun | 17 | Bright |
| Jul | 19 | Bright |
| Aug | 18 | Bright |
| Sep | 17 | Bright |
| Oct | 19 | Bright |
| Nov | 17 | Bright |
| Dec | 16 | Bright |
Humidity comfort
Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.
Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.
In San Angelo, how humid it feels changes dramatically over the year.
The more humid part of the year lasts 5.0 months, from around May 6 to October 3. The muggiest month is July, when the air feels humid, muggy or worse about 80% of the time.
The most comfortable stretch runs from around October 4 to May 5, and January is the most comfortable month — the air is dry or comfortable 100% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 99 | 97 | 89 | 74 | 32 | 5 | 3 | 3 | 23 | 61 | 87 | 97 |
| Comfortable (%) | 1 | 3 | 9 | 16 | 22 | 16 | 17 | 18 | 19 | 18 | 9 | 3 |
| Humid (%) | 0 | 0 | 2 | 10 | 34 | 40 | 47 | 47 | 33 | 14 | 4 | 0 |
| Muggy (%) | 0 | 0 | 0 | 1 | 11 | 36 | 31 | 30 | 24 | 7 | 0 | 0 |
| Oppressive (%) | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 2 | 1 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| Jan | 99 | 1 | 0 | 0 | 0 |
| Feb | 97 | 3 | 0 | 0 | 0 |
| Mar | 89 | 9 | 2 | 0 | 0 |
| Apr | 74 | 16 | 10 | 1 | 0 |
| May | 32 | 22 | 34 | 11 | 0 |
| Jun | 5 | 16 | 40 | 36 | 2 |
| Jul | 3 | 17 | 47 | 31 | 2 |
| Aug | 3 | 18 | 47 | 30 | 2 |
| Sep | 23 | 19 | 33 | 24 | 1 |
| Oct | 61 | 18 | 14 | 7 | 0 |
| Nov | 87 | 9 | 4 | 0 | 0 |
| Dec | 97 | 3 | 0 | 0 | 0 |
Wind
Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.
This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.
Across the year, average wind speed in San Angelo is typically light breeze, near 10 mph, and varies moderately with the seasons.
The windier part of the year lasts 4.8 months, from around Feb 5 to Jun 30. The windiest month is April, averaging about 12 mph (light breeze).
The calmer part of the year runs from around Jul 1 to Nov 21, with September the calmest month at about 8 mph.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 10 | 10 | 11 | 12 | 11 | 10 | 9 | 8 | 8 | 9 | 10 | 10 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (mph) | Feels | |
|---|---|---|
| Jan | 10 | light breeze |
| Feb | 10 | light breeze |
| Mar | 11 | light breeze |
| Apr | 12 | light breeze |
| May | 11 | light breeze |
| Jun | 10 | light breeze |
| Jul | 9 | light breeze |
| Aug | 8 | light breeze |
| Sep | 8 | light breeze |
| Oct | 9 | light breeze |
| Nov | 10 | light breeze |
| Dec | 10 | light breeze |
Best time to visit San Angelo
To characterize how pleasant the weather is in San Angelo throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around late February, San Angelo is still near the start of its best-weather window — great conditions with the peak-season crowds not yet at full swing.
Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.
The travel score favors clear, rainless days with daytime highs between 64°F and 82°F. Based on this score, the best times of year to visit San Angelo for general outdoor tourist activities run from mid February to early May and again from late September to early December, with a peak score in the first week of April.
The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 5.4 | 6.5 | 7.5 | 7.5 | 5.2 | 3.7 | 3.0 | 3.3 | 5.3 | 7.6 | 7.3 | 5.6 |
| Rating | fair | good | good | ideal | fair | fair | poor | poor | fair | ideal | good | good |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 5.4 | fair |
| Feb | 6.5 | good |
| Mar | 7.5 | good |
| Apr | 7.5 | ideal |
| May | 5.2 | fair |
| Jun | 3.7 | fair |
| Jul | 3.0 | poor |
| Aug | 3.3 | poor |
| Sep | 5.3 | fair |
| Oct | 7.6 | ideal |
| Nov | 7.3 | good |
| Dec | 5.6 | good |
The beach/pool score favors clear, rainless days with daytime highs between 75°F and 93°F. Based on this score, the best times of year to visit San Angelo for hot-weather activities run from late March to mid July and again from mid August to late October, with a peak score in the last week of September.
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
What to pack for San Angelo, by month
Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.
For a warm-season trip around July (highs near 95°F), the essentials are light clothes and sun protection. In the cold season around January (highs near 59°F), pack a warm layer.
In July, San Angelo sees daytime highs around 95°F and nights near 73°F. Pack light clothes and sun protection. About 5 days see rain.
UV index (midday) in San Angelo by month
Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.
Under clear skies, the midday UV index in San Angelo peaks around July 18 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 4 | 5 | 7 | 9 | 10 | 11 | 11 | 11 | 9 | 6 | 5 | 3 |
| Level | Moderate | High | High | Very high | Extreme | Extreme | Extreme | Extreme | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 5 | High |
| Mar | 7 | High |
| Apr | 9 | Very high |
| May | 10 | Extreme |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 11 | Extreme |
| Sep | 9 | Very high |
| Oct | 6 | High |
| Nov | 5 | Moderate |
| Dec | 3 | Moderate |
Average hourly UV index in San Angelo
Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.
The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
UV falls off far faster than brightness as the sun drops, so even in July the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 6 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 3.5 | 5 | 6 | 7.5 | 8 | 8.5 | 8.5 | 8 | 7 | 5.5 | 4.5 | 2.5 |
| UV ≥ 6 (h/day) | 0 | 0 | 2.5 | 5 | 5.5 | 6 | 6 | 6 | 4.5 | 1.5 | 0 | 0 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 3.5 | 0 |
| Feb | 5 | 0 |
| Mar | 6 | 2.5 |
| Apr | 7.5 | 5 |
| May | 8 | 5.5 |
| Jun | 8.5 | 6 |
| Jul | 8.5 | 6 |
| Aug | 8 | 6 |
| Sep | 7 | 4.5 |
| Oct | 5.5 | 1.5 |
| Nov | 4.5 | 0 |
| Dec | 2.5 | 0 |
Growing season
San Angelo is mild enough that a frost-free day stays more likely than not even in midwinter. Nights are reliably above freezing from about March 9 to November 17 (254 days); outside that window a hard frost is an occasional risk.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 69 | 80 | 94 | 99 | 100 | 100 | 100 | 100 | 100 | 99 | 91 | 73 |
| Frost nights | 31 | 28 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 31 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 69 | 31 |
| Feb | 80 | 28 |
| Mar | 94 | 9 |
| Apr | 99 | 0 |
| May | 100 | 0 |
| Jun | 100 | 0 |
| Jul | 100 | 0 |
| Aug | 100 | 0 |
| Sep | 100 | 0 |
| Oct | 99 | 0 |
| Nov | 91 | 13 |
| Dec | 73 | 31 |
Growing degree days
Growing degree days tally heat above 50°F: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. San Angelo banks about 6,169 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around July.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°F·days) | 0 | 56 | 288 | 507 | 768 | 938 | 1,054 | 1,031 | 805 | 531 | 186 | 5 |
| Growing degree days (°F·days) | |
|---|---|
| Jan | 0 |
| Feb | 56 |
| Mar | 288 |
| Apr | 507 |
| May | 768 |
| Jun | 938 |
| Jul | 1,054 |
| Aug | 1,031 |
| Sep | 805 |
| Oct | 531 |
| Nov | 186 |
| Dec | 5 |
Solar energy
Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.
Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.
San Angelo receives about 5.2 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 3.0 and 7.1 kWh/m².
The brighter stretch of the year lasts 6.2 months, from around Mar 17 to Sep 22. The brightest month is July, averaging about 7.0 kWh/m² (intense).
The dimmest month is December, down near 3.1 kWh/m² — roughly 56% less than the July peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 3.3 | 4.1 | 5.2 | 6.4 | 6.5 | 7.0 | 7.0 | 6.5 | 5.4 | 4.4 | 3.4 | 3.0 |
| Level | Moderate | Bright | Bright | Intense | Intense | Intense | Intense | Intense | Bright | Bright | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 3.3 | Moderate |
| Feb | 4.1 | Bright |
| Mar | 5.2 | Bright |
| Apr | 6.4 | Intense |
| May | 6.5 | Intense |
| Jun | 7.0 | Intense |
| Jul | 7.0 | Intense |
| Aug | 6.5 | Intense |
| Sep | 5.4 | Bright |
| Oct | 4.4 | Bright |
| Nov | 3.4 | Moderate |
| Dec | 3.0 | Moderate |
Where is San Angelo?
San Angelo sits at 31.5°N, 100.4°W, 1,844 ft above sea level, in United States. The nearest listed city is Abilene, 80 mi away.
Topography around San Angelo
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of San Angelo.
Within 2 miles, the terrain around San Angelo has only modest variations in elevation — a maximum elevation change of 125 ft around an average of 1,857 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 604 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,332 ft.
The land around San Angelo is covered by artificial surfaces (60%) within 2 miles, cropland (31%) and grassland (26%) within 10 miles, and grassland (62%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for San Angelo (31.4638°, -100.437°, elevation 1,844 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).