Climate and average weather in Sherrelwood

In Sherrelwood, the summers are hot, fairly dry, and partly cloudy and the winters are cold, snowy, and mostly clear.

Best: mid August to late October

Over the course of the year, the temperature in Sherrelwood typically varies from 18°F to 85°F, and is rarely below 3°F or above 94°F. July is the hottest month of the year, while December is the coldest.

Based on the travel score, the best times of year to visit Sherrelwood for warm-weather activities are from late May to late June and mid August to late October.

Hottest
Jul
85°
Coldest
Dec
18°
Wettest
May
3.2 in
Driest
Dec
0.8 in
Rain / yr
19.9 in
84 wet days
Daylight
9.2–14.8 h
shortest–longest
Elevation
5,292 ft
39.8°N
Clearest
Oct
39% cloud

Sherrelwood is census-designated place in Adams County, Colorado, United States.

Density
2,882/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Sherrelwood 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 August to late October.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Sherrelwood, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

The hot season lasts 3.6 months, from June 2 to September 19, with daily high temperatures above 75°F. The hottest month of the year in Sherrelwood is July, with an average high of 85°F and low of 58°F.

The cool season lasts 3.5 months, from November 20 to March 4, with daily high temperatures below 49°F. The coldest month of the year in Sherrelwood is December, with an average low of 18°F and high of 42°F.

Days typically run about 26°F warmer than nights year-round.

20°40°60°80°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°F)Avg low (°F)
Jan4218
Feb4420
Mar5327
Apr5933
May6943
Jun8052
Jul8558
Aug8357
Sep7649
Oct6437
Nov5126
Dec4218

How hot and cold Sherrelwood really feels

Feels-like highFeels-like lowactual air temp

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 coldest nights, wind chill pulls the feels-like down to about 9°F (around January 1), with roughly 193 freezing days a year (feels-like at or below 32°F) 84 of them bitterly cold — worst in January.

20°40°60°80°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°F)Air high (°F)Feels-like low (°F)Air low (°F)
Jan42421118
Feb44441320
Mar53532027
Apr59592833
May69693943
Jun80805152
Jul85855858
Aug83835757
Sep76764749
Oct64643337
Nov51512026
Dec42421118

Average hourly temperature in Sherrelwood

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 85°F, and coldest before dawn in December, near 18°F.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

Sherrelwood weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan42° / 18°0.95.259.50.3
Feb44° / 20°0.95.85.510.41.0
Mar53° / 27°1.97.65.711.73.3
Apr59° / 33°2.79.94.7134.7
May69° / 43°3.211114.26.2
Jun80° / 52°2.18.3014.86.8
Jul85° / 58°1.67.2014.55.5
Aug83° / 57°1.56.4013.66.3
Sep76° / 49°1.45.80.512.37.7
Oct64° / 37°1.66.12.210.96.4
Nov51° / 26°1.265.19.82.9
Dec42° / 18°0.84.84.99.20.3

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

Sherrelwood gets about 19.9 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 3.2 months, from around Mar 18 to Jun 23, peaking in May at about 37% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jan 12.

May is the wettest month by volume, with 3.2 in over about 11 wet days; December is the driest, with 0.8 in. Some of the cold-season precipitation falls as snow.

0%10%20%30%40%50%JanFebMarAprMayJunJulAugSepOctNovDecdrierwetterdriermostly drysome rainoften wetvery wetMay 24 · 37%Jan 12 · 14%
Rain on a day (%)Rain days
Jan165
Feb216
Mar248
Apr3310
May3611
Jun288
Jul247
Aug206
Sep206
Oct196
Nov196
Dec175

Monthly rainfall

Over a full year, Sherrelwood collects about 19.9 in of rain across 84 wet days — roughly 1.7 in in an average month.

It doesn’t fall evenly. May is the wettest month with 3.2 in, while December is the driest at just 0.8 in. The three wettest months alone bring about 40% of the year’s total, and some of the cold-season precipitation falls as snow.

00.511.522.533.54JanFebMarAprMayJunJulAugSepOctNovDec0.90.91.92.73.22.11.61.51.41.61.20.8
Rainfall (in)Rain daysSnow days
Jan0.955
Feb0.966
Mar1.986
Apr2.7105
May3.2111
Jun2.180
Jul1.670
Aug1.560
Sep1.461
Oct1.662
Nov1.265
Dec0.855

Snow in Sherrelwood

Average snowy days through the year, the snow-season span, and estimated snowfall — for ski trips and the perennial 'will there be snow at Christmas?' question.

Sherrelwood averages about 35 snowy days a year. Snow season runs roughly Sep 13 to May 22 — about 8.3 months.

February is snowiest, with roughly 6 days of snow and an estimated 9 in of snowfall. Over the year that adds up to an estimated 71 in of snow.

02468JanFebMarAprMayJunJulAugSepOctNovDecsnow seasonsnow seasonFeb 6
Snow daysSnowfall (in)
Jan58
Feb69
Mar614
Apr513
May12
Jun00
Jul00
Aug00
Sep11
Oct24
Nov511
Dec59

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In Sherrelwood, 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 August 5 and lasts for 5.7 months, ending around January 23. The clearest month is September, when the sky is clear, mostly clear, or partly cloudy 72% of the time on average.

The cloudier part of the year begins around January 24 and lasts for 4.7 months, ending around June 16. The cloudiest month is April, when it is overcast or mostly cloudy 50% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecSep 19 · 73%May 19 · 48%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearer
Clearer (%)Cloudier (%)
Jan6535
Feb6040
Mar5743
Apr5050
May5050
Jun6337
Jul6634
Aug6733
Sep7228
Oct7129
Nov7030
Dec7030

Daylight, sunrise and sunset

DaylightNight

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 10, brings about 14 h 48 min of light; the shortest, around January 1, only 9 h 12 min — a swing of roughly 5 h 36 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan9.57:254:53
Feb10.47:025:28
Mar11.76:196:00
Apr13.05:296:32
May14.24:517:02
Jun14.84:367:24
Jul14.54:497:23
Aug13.65:176:52
Sep12.35:476:02
Oct10.96:175:13
Nov9.86:524:38
Dec9.27:204:32

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

Sherrelwood averages about 13 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 8 and 18 days.

The sunnier stretch runs 5.9 months, from around Sep 1 to Feb 27. The sunniest month is October, with roughly 17 sunny days (bright).

The greyest month is May, down near 8 sunny days — about 54% fewer than the October peak.

05101520JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedbrightOct 1318 daysMay 218 days
Sunny daysSky
Jan15Bright
Feb12Mixed
Mar12Mixed
Apr9Mixed
May8Gloomy
Jun10Mixed
Jul11Mixed
Aug12Mixed
Sep15Bright
Oct18Bright
Nov16Bright
Dec17Bright

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

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 Sherrelwood, the air stays dry or comfortable essentially all year. Even in July, the muggiest month, it feels humid or worse only about 0% of the time — humidity is not something you need to plan around here.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDeccomfortabledry
Dry (%)Comfortable (%)
Jan1000
Feb1000
Mar1000
Apr1000
May1000
Jun973
Jul8614
Aug919
Sep991
Oct1000
Nov1000
Dec1000

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.

Wind in Sherrelwood is steady company: average speeds sit near 5 mphcalm — in every month of the year, with no meaningful windy or calm season.

0510JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezeApr 12 · 6 mphAug 3 · 5 mph
Wind speed (mph)Feels
Jan5calm
Feb5calm
Mar5calm
Apr6calm
May5calm
Jun5calm
Jul5calm
Aug5calm
Sep5calm
Oct5calm
Nov5calm
Dec5calm

Best time to visit Sherrelwood

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in Sherrelwood throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around mid October, Sherrelwood is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.

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 Sherrelwood for general outdoor tourist activities run from mid May to late June and again from mid August to late October, with a peak score in the third week of September.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timetravel scoretemperaturecloudsprecipitationSep 20 · 7.8

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).

Travel score (0–10)Rating
Jan0.3poor
Feb1.0poor
Mar3.3poor
Apr4.7fair
May6.2good
Jun6.7good
Jul5.6good
Aug6.4good
Sep7.6ideal
Oct6.4good
Nov2.9poor
Dec0.3poor

The beach/pool score favors clear, rainless days with daytime highs between 75°F and 93°F. Based on this score, the best time of year to visit Sherrelwood for hot-weather activities is from early June to late September, with a peak score in the last week of August.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationAug 23 · 7.8

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 Sherrelwood, by month

EssentialRecommendedOptional

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 85°F), the essentials are light clothes and sun protection. In the cold season around December (highs near 42°F), pack a warm layer and a heavy coat.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In July, Sherrelwood sees daytime highs around 85°F and nights near 58°F. Pack light clothes and sun protection. About 7 days see rain.

UV index (midday) in Sherrelwood by month

LowModerateHighVery highExtreme

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 Sherrelwood peaks around July 13 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 13UV 11Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar7High
Apr6High
May7Very high
Jun11Extreme
Jul11Extreme
Aug10Very high
Sep7Very high
Oct5High
Nov3Moderate
Dec2Low

Average hourly UV index in Sherrelwood

LowModerateHighVery highExtreme

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 9 hours a day reach index 3 (protection recommended), and 6.5 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan00
Feb3.50
Mar62
Apr6.52.5
May7.54
Jun96.5
Jul96.5
Aug85.5
Sep6.53.5
Oct50
Nov20
Dec00

Air quality in Sherrelwood by month

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.

Air quality in Sherrelwood is worst in August — around 21 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (May, 13 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateAug 1620 µg/m³May 1113 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb15Moderate
Mar16Moderate
Apr13Moderate
May13Moderate
Jun14Moderate
Jul14Moderate
Aug21Moderate
Sep13Moderate
Oct15Moderate
Nov15Moderate
Dec16Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayTypical season (≥50%)

The growing season in Sherrelwood typically lasts about 202 days, from around April 10 to October 28 — the span where a frost-free day is more likely than not. It is reliably frost-free from May 9 to October 6.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecgrowing seasonFeb 1910%Apr 1050%May 990%Oct 690%Oct 2850%Dec 710%
Frost-free chance (%)Frost nights
Jan831
Feb1028
Mar2731
Apr5830
May948
Jun1000
Jul1000
Aug1000
Sep990
Oct7426
Nov2630
Dec831

Growing degree days

Degree days (base 50°F)Frost-free shaded

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. Sherrelwood banks about 2,377 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around July.

05001,0001,5002,0002,500JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°F·days)
Jan0
Feb0
Mar0
Apr0
May175
Jun474
Jul674
Aug622
Sep376
Oct55
Nov0
Dec0

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.

Sherrelwood receives about 5.1 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.5 and 7.5 kWh/m².

The brighter stretch of the year lasts 6.4 months, from around Mar 13 to Sep 23. The brightest month is June, averaging about 7.4 kWh/m² (intense).

The dimmest month is December, down near 2.6 kWh/m² — roughly 66% less than the June peak.

0123456789JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmerdimmoderatebrightintenseJun 267.5 kWhDec 162.5 kWh
Solar energy (kWh/m²)Level
Jan2.9Moderate
Feb4.0Moderate
Mar5.3Bright
Apr6.3Intense
May6.8Intense
Jun7.5Intense
Jul7.3Intense
Aug6.5Intense
Sep5.5Bright
Oct4.1Bright
Nov3.0Moderate
Dec2.5Moderate

Where is Sherrelwood?

Sherrelwood sits at 39.8°N, 105.0°W, 5,292 ft above sea level, in United States. The nearest listed city is Westminster, 1.9 mi away.

Topography around Sherrelwood

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Sherrelwood.

Within 2 miles, the terrain around Sherrelwood has only modest variations in elevation — a maximum elevation change of 440 ft around an average of 5,292 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 912 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 9,685 ft.

The land around Sherrelwood is covered by artificial surfaces (69%) within 2 miles, artificial surfaces (50%) and grassland (29%) within 10 miles, and grassland (42%) and trees (32%) within 50 miles.

2 miles
440 ft
10 miles
912 ft
50 miles
9,685 ft
treesgrasslandcroplandartificial surfacesbare terrainwatermoss and lichen
Nearby: Westminster 1.9 mi · Thornton 2.5 mi · Northglenn 3.1 mi · Commerce City 4.3 mi · Arvada 5.0 mi · Wheat Ridge 6.2 mi · Denver 6.8 mi · Broomfield 7.5 mi

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
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

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 Sherrelwood (39.8378°, -105.0014°, elevation 5,292 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).