Sierra Vista weather in January
In January, Sierra Vista sees average daytime highs of 59°F and overnight lows near 35°F, with 0.9 in of precipitation across 3.6 wet days and about 10.2 hours of daylight. It is the 11th-warmest and 5th-wettest month of the year here.
Day-to-day highs hold fairly steady near 59°F through the month. The sky is clear or mostly clear about 56% of the time in January, and the air most often feels dry.
Daylight stretches from about 10 hours at the start of January to 10 h 30 min by month's end. Set against the rest of the year, January is Sierra Vista's 9th-clearest and 8th-windiest month. For the whole year in context, see Sierra Vista's year-round climate.
- Daytime high
- 59°
- 11th warmest
- Overnight low
- 35°
- 2nd coldest
- Precipitation
- 0.9 in
- 3.6 wet days
- Daylight
- 10 h 12 min
- 7:26 AM – 5:35 PM
- Cloud cover
- 37%
- 9th clearest
- Wind
- 5 mph
- 8th windiest
- Solar energy
- 3.82 kWh/m²
- Travel score
- 5.6
- out of 10
Sierra Vista is city in Cochise County, Arizona, United States.
- Density
- 110/km²
- people per km²
- Founded
- 1956
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in January
Day-to-day highs hold fairly steady near 59°F through the month.
A typical January day in Sierra Vista reaches about 59°F in the afternoon and slips back to 35°F overnight — a 24°F spread between the day's warmth and the night's chill. On most days the high lands between 48°F and 69°F. Set against its neighbours, January runs on par with December and about 3°F cooler than February.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 57 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 59 | 59 | 59 | 59 | 59 | 59 | 59 | 59 | 59 | 59 | 59 | 59 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 |
| Avg low (°F) | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 36 | 36 | 36 | 36 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 57 | 35 |
| 2 | 58 | 35 |
| 3 | 58 | 35 |
| 4 | 58 | 35 |
| 5 | 58 | 35 |
| 6 | 58 | 35 |
| 7 | 58 | 35 |
| 8 | 58 | 35 |
| 9 | 59 | 35 |
| 10 | 59 | 35 |
| 11 | 59 | 35 |
| 12 | 59 | 35 |
| 13 | 59 | 35 |
| 14 | 59 | 35 |
| 15 | 59 | 35 |
| 16 | 59 | 35 |
| 17 | 59 | 35 |
| 18 | 59 | 35 |
| 19 | 59 | 35 |
| 20 | 59 | 35 |
| 21 | 60 | 35 |
| 22 | 60 | 35 |
| 23 | 60 | 35 |
| 24 | 60 | 35 |
| 25 | 60 | 35 |
| 26 | 60 | 35 |
| 27 | 60 | 35 |
| 28 | 60 | 36 |
| 29 | 60 | 36 |
| 30 | 60 | 36 |
| 31 | 60 | 36 |
How January really feels in Sierra Vista
Once humidity and wind are folded in, January averages 0 days that feel above 90°F and 31 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
The story in January is cold — wind chill drags the overnight "feels like" below the raw low.
Sierra Vista weather by month
How January compares with the rest of the year at a glance. January is the 11th-warmest and 5th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 59° / 35° | 0.9 | 3.6 | 0.6 | 10.2 | 5.6 |
| Feb | 62° / 37° | 0.8 | 4 | 0.5 | 10.8 | 6.4 |
| Mar | 68° / 41° | 0.5 | 2.7 | 0.4 | 11.8 | 7.9 |
| Apr | 75° / 46° | 0.2 | 1.5 | 0.1 | 12.7 | 8.8 |
| May | 84° / 53° | 0.2 | 1.6 | 0 | 13.6 | 7.3 |
| Jun | 92° / 62° | 0.4 | 2.9 | 0 | 14 | 4.3 |
| Jul | 90° / 67° | 2.7 | 12.8 | 0 | 13.8 | 3.8 |
| Aug | 87° / 65° | 2.5 | 12.8 | 0 | 13.2 | 4.6 |
| Sep | 84° / 62° | 1.4 | 6.1 | 0 | 12.2 | 6.3 |
| Oct | 77° / 52° | 0.5 | 2.9 | 0 | 11.2 | 8.5 |
| Nov | 67° / 43° | 0.6 | 2.3 | 0.1 | 10.4 | 7.8 |
| Dec | 58° / 35° | 0.9 | 3.9 | 1.1 | 10 | 5.3 |
Cloud cover in January
The sky is clear or mostly clear about 56% of the time in January.
Beyond those clear spells, partly cloudy skies cover about 13% of January, with mostly cloudy or overcast conditions the remaining 30%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 67 | 67 | 68 | 68 | 68 | 68 | 68 | 69 | 70 | 69 | 69 | 70 | 70 | 70 | 70 | 71 | 70 | 70 | 70 | 70 | 70 | 71 | 70 | 70 | 70 | 71 | 71 | 72 | 72 | 72 | 72 |
| Cloudier (%) | 33 | 33 | 32 | 32 | 32 | 32 | 32 | 31 | 30 | 31 | 31 | 30 | 30 | 30 | 30 | 29 | 30 | 30 | 30 | 30 | 30 | 29 | 30 | 30 | 30 | 29 | 29 | 28 | 28 | 28 | 28 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 67 | 33 |
| 2 | 67 | 33 |
| 3 | 68 | 32 |
| 4 | 68 | 32 |
| 5 | 68 | 32 |
| 6 | 68 | 32 |
| 7 | 68 | 32 |
| 8 | 69 | 31 |
| 9 | 70 | 30 |
| 10 | 69 | 31 |
| 11 | 69 | 31 |
| 12 | 70 | 30 |
| 13 | 70 | 30 |
| 14 | 70 | 30 |
| 15 | 70 | 30 |
| 16 | 71 | 29 |
| 17 | 70 | 30 |
| 18 | 70 | 30 |
| 19 | 70 | 30 |
| 20 | 70 | 30 |
| 21 | 70 | 30 |
| 22 | 71 | 29 |
| 23 | 70 | 30 |
| 24 | 70 | 30 |
| 25 | 70 | 30 |
| 26 | 71 | 29 |
| 27 | 71 | 29 |
| 28 | 72 | 28 |
| 29 | 72 | 28 |
| 30 | 72 | 28 |
| 31 | 72 | 28 |
Chance of precipitation in January
Sierra Vista gets around 0.9 in of rain and snow over 3.6 wet days in January. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 12% and peaks near 13% on the wettest days, and about 1 day brings snow.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Snow chance (%) | 4 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 13 | 4 |
| 2 | 12 | 3 |
| 3 | 12 | 3 |
| 4 | 12 | 3 |
| 5 | 12 | 3 |
| 6 | 12 | 2 |
| 7 | 12 | 2 |
| 8 | 11 | 2 |
| 9 | 11 | 2 |
| 10 | 11 | 2 |
| 11 | 11 | 2 |
| 12 | 11 | 2 |
| 13 | 11 | 2 |
| 14 | 11 | 2 |
| 15 | 11 | 2 |
| 16 | 11 | 2 |
| 17 | 11 | 2 |
| 18 | 11 | 2 |
| 19 | 11 | 2 |
| 20 | 11 | 2 |
| 21 | 11 | 2 |
| 22 | 12 | 2 |
| 23 | 12 | 2 |
| 24 | 12 | 2 |
| 25 | 12 | 2 |
| 26 | 12 | 2 |
| 27 | 12 | 2 |
| 28 | 12 | 2 |
| 29 | 12 | 2 |
| 30 | 12 | 2 |
| 31 | 12 | 2 |
Humidity in January
Most of January feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, January lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Dry (%) | |
|---|---|
| 1 | 100 |
| 2 | 100 |
| 3 | 100 |
| 4 | 100 |
| 5 | 100 |
| 6 | 100 |
| 7 | 100 |
| 8 | 100 |
| 9 | 100 |
| 10 | 100 |
| 11 | 100 |
| 12 | 100 |
| 13 | 100 |
| 14 | 100 |
| 15 | 100 |
| 16 | 100 |
| 17 | 100 |
| 18 | 100 |
| 19 | 100 |
| 20 | 100 |
| 21 | 100 |
| 22 | 100 |
| 23 | 100 |
| 24 | 100 |
| 25 | 100 |
| 26 | 100 |
| 27 | 100 |
| 28 | 100 |
| 29 | 100 |
| 30 | 100 |
| 31 | 100 |
Wind in January
Winds average 5 mph in January.
Across January, daily wind ranges from about 5 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 5 | calm |
| 2 | 5 | calm |
| 3 | 5 | calm |
| 4 | 5 | calm |
| 5 | 5 | calm |
| 6 | 5 | calm |
| 7 | 5 | calm |
| 8 | 5 | calm |
| 9 | 5 | calm |
| 10 | 5 | calm |
| 11 | 5 | calm |
| 12 | 5 | calm |
| 13 | 5 | calm |
| 14 | 5 | calm |
| 15 | 5 | calm |
| 16 | 5 | calm |
| 17 | 5 | calm |
| 18 | 5 | calm |
| 19 | 5 | calm |
| 20 | 5 | calm |
| 21 | 5 | calm |
| 22 | 5 | calm |
| 23 | 5 | calm |
| 24 | 5 | calm |
| 25 | 5 | calm |
| 26 | 5 | calm |
| 27 | 6 | calm |
| 28 | 6 | calm |
| 29 | 6 | calm |
| 30 | 6 | calm |
| 31 | 6 | calm |
Sunrise & sunset in January
Daylight runs from about 10 hours at the start of January to 10 h 30 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 30 minutes over January. Sunrise moves from 7:25 AM to 7:21 AM, and sunset from 5:24 PM to 5:48 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.2 | 10.2 | 10.2 | 10.2 | 10.2 | 10.2 | 10.3 | 10.3 | 10.3 | 10.3 | 10.3 | 10.4 | 10.4 | 10.4 | 10.4 | 10.5 |
| Sunrise (AM) | 7:25 | 7:25 | 7:26 | 7:26 | 7:26 | 7:26 | 7:26 | 7:26 | 7:26 | 7:26 | 7:26 | 7:26 | 7:26 | 7:26 | 7:26 | 7:26 | 7:26 | 7:26 | 7:25 | 7:25 | 7:25 | 7:25 | 7:24 | 7:24 | 7:24 | 7:23 | 7:23 | 7:22 | 7:22 | 7:21 | 7:21 |
| Sunset (PM) | 5:24 | 5:24 | 5:25 | 5:26 | 5:26 | 5:27 | 5:28 | 5:29 | 5:29 | 5:30 | 5:31 | 5:32 | 5:33 | 5:33 | 5:34 | 5:35 | 5:36 | 5:37 | 5:38 | 5:39 | 5:39 | 5:40 | 5:41 | 5:42 | 5:43 | 5:44 | 5:45 | 5:46 | 5:46 | 5:47 | 5:48 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 10.0 | 7:25 | 5:24 |
| 2 | 10.0 | 7:25 | 5:24 |
| 3 | 10.0 | 7:26 | 5:25 |
| 4 | 10.0 | 7:26 | 5:26 |
| 5 | 10.0 | 7:26 | 5:26 |
| 6 | 10.0 | 7:26 | 5:27 |
| 7 | 10.0 | 7:26 | 5:28 |
| 8 | 10.0 | 7:26 | 5:29 |
| 9 | 10.1 | 7:26 | 5:29 |
| 10 | 10.1 | 7:26 | 5:30 |
| 11 | 10.1 | 7:26 | 5:31 |
| 12 | 10.1 | 7:26 | 5:32 |
| 13 | 10.1 | 7:26 | 5:33 |
| 14 | 10.1 | 7:26 | 5:33 |
| 15 | 10.1 | 7:26 | 5:34 |
| 16 | 10.2 | 7:26 | 5:35 |
| 17 | 10.2 | 7:26 | 5:36 |
| 18 | 10.2 | 7:26 | 5:37 |
| 19 | 10.2 | 7:25 | 5:38 |
| 20 | 10.2 | 7:25 | 5:39 |
| 21 | 10.2 | 7:25 | 5:39 |
| 22 | 10.3 | 7:25 | 5:40 |
| 23 | 10.3 | 7:24 | 5:41 |
| 24 | 10.3 | 7:24 | 5:42 |
| 25 | 10.3 | 7:24 | 5:43 |
| 26 | 10.3 | 7:23 | 5:44 |
| 27 | 10.4 | 7:23 | 5:45 |
| 28 | 10.4 | 7:22 | 5:46 |
| 29 | 10.4 | 7:22 | 5:46 |
| 30 | 10.4 | 7:21 | 5:47 |
| 31 | 10.5 | 7:21 | 5:48 |
Solar energy in January
Average shortwave solar energy reaching the ground each day in January, about 3.82 kWh/m².
For context, solar energy here swings from a low near 3.52 kWh/m² to a high of 8.28 kWh/m² in May across the year — January's 3.82 kWh/m² sits near the bottom.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.7 | 3.7 | 3.7 | 3.7 | 3.7 | 3.8 | 3.8 | 3.8 | 3.8 | 3.9 | 3.9 | 3.9 | 3.9 | 4.0 | 4.0 | 4.0 | 4.0 | 4.1 | 4.1 | 4.2 | 4.2 | 4.2 | 4.2 | 4.3 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 3.6 | Moderate |
| 2 | 3.6 | Moderate |
| 3 | 3.6 | Moderate |
| 4 | 3.6 | Moderate |
| 5 | 3.6 | Moderate |
| 6 | 3.6 | Moderate |
| 7 | 3.6 | Moderate |
| 8 | 3.7 | Moderate |
| 9 | 3.7 | Moderate |
| 10 | 3.7 | Moderate |
| 11 | 3.7 | Moderate |
| 12 | 3.7 | Moderate |
| 13 | 3.8 | Moderate |
| 14 | 3.8 | Moderate |
| 15 | 3.8 | Moderate |
| 16 | 3.8 | Moderate |
| 17 | 3.9 | Moderate |
| 18 | 3.9 | Moderate |
| 19 | 3.9 | Moderate |
| 20 | 3.9 | Moderate |
| 21 | 4.0 | Moderate |
| 22 | 4.0 | Moderate |
| 23 | 4.0 | Bright |
| 24 | 4.0 | Bright |
| 25 | 4.1 | Bright |
| 26 | 4.1 | Bright |
| 27 | 4.2 | Bright |
| 28 | 4.2 | Bright |
| 29 | 4.2 | Bright |
| 30 | 4.2 | Bright |
| 31 | 4.3 | Bright |
Is January a good time to visit Sierra Vista?
Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
January is a reasonable time to visit Sierra Vista for sightseeing.
What to pack for Sierra Vista in January
From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In January, Sierra Vista sees daytime highs around 59°F and nights near 35°F. Worth packing: a warm layer. About 4 days see rain.
UV index in Sierra Vista in January
Clear-sky midday UV in January peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Sierra Vista peaks around June 22 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 4 (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 | 10 | 10 | 12 | 12 | 12 | 10 | 7 | 5 | 4 |
| Level | Moderate | High | High | Very high | Very high | Extreme | Extreme | Extreme | Very high | Very high | High | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 5 | High |
| Mar | 7 | High |
| Apr | 10 | Very high |
| May | 10 | Very high |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 10 | Very high |
| Oct | 7 | Very high |
| Nov | 5 | High |
| Dec | 4 | Moderate |
Where is Sierra Vista?
Sierra Vista sits at 31.6°N, 110.3°W, 4,633 ft above sea level, in United States. The nearest listed city is Cananea, 39 mi away.
Topography around Sierra Vista
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Sierra Vista.
Within 2 miles, the terrain around Sierra Vista has only modest variations in elevation — a maximum elevation change of 377 ft around an average of 4,646 ft above sea level; within 10 miles, very significant variations in elevation — a maximum elevation change of 5,213 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 7,077 ft.
The land around Sierra Vista is covered by grassland (32%), artificial surfaces (32%) and shrubs (31%) within 2 miles, shrubs (62%) within 10 miles, and shrubs (67%) and grassland (23%) 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 Sierra Vista (31.5545°, -110.3037°, elevation 4,633 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).