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CheckWeather USCheyenne
Forecast confidence: High · models disagree by 3°F

Cheyenne weather

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Heavy drizzle,rain likely tomorrow

NWS, the American and the European model agree on a high near 78° in Cheyenne today. Tomorrow looks light rain around 71°, with a 96% chance of rain.

78°55°
71°52°
66°47°
68°46°
72°51°
74°53°
Todaymodels agreeTomorrowmodels agreeSundaysplit ±9°Mondaysplit ±9°Tuesdaysplit ±8°Wednesdaysplit ±4°
NWSNational Blend (NBM)
77°
Heavy drizzle
Today 77°·Low 55°·Rain 50%
AmericanNOAA GFS
80°
Rain
Today 80°·Low 54°·Rain 50%
EuropeanECMWF
78°
Drizzle
Today 78°·Low 57°·Rain 80%
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Cheyenne weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Cheyenne weather in numbers

from 30 years of measured normals

Cheyenne swings 67°F across the year, from 83°F highs in July to 16°F lows in January, and May is usually the wettest month in a year that brings about 18 in of precipitation.

Warmest month
July
83°F average high
Coldest month
January
16°F average low
Wettest month
May
18 in a year
Below freezing
6 months
January, February, March, April, November and December
Comfortable
3 months
June, September and October
Residents
65,000
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The weather map: all three models at once

NWS, American, European side by side around Cheyenne and nearby towns.Live rain radar →
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Cheyenne hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Cheyenne 10-day forecast, out to 14 days

where the models agree, and where they split
Today
Heavy drizzle
78° 55°
models agree
Tomorrow
Light rain
71° 52°
models agree
Sun
Drizzle
66° 47°
±9°
Mon
Light drizzle
68° 46°
±9°
Tue
Light drizzle
72° 51°
±8°
Wed
Cloudy
74° 53°
±4°
Thu
Light drizzle
74° 52°
models agree
Fri
Light drizzle
75° 53°
±9°
Sat
Light drizzle
75° 56°
±9°
Sun
Light drizzle
72° 51°
±10°
Mon
Light drizzle
71° 49°
±4°
Tue
Cloudy
74° 50°
±11°
Wed
Cloudy
78° 53°
models agree
Thu
Light drizzle
75° 57°
±11°

Cheyenne, Wyoming (WY) is at its warmest in Jul (average highs near 83°F) and coldest in Jan (lows around 16°F), with roughly 18 in of precipitation across the year. Below, compare what NWS, American, European forecast for Cheyenne right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Cheyenne climate by month

average daytime high and overnight low across a typical year
Jan
32°
16°
Feb
40°
20°
Mar
43°
23°
Apr
54°
31°
May
65°
42°
Jun
75°
54°
Jul
83°
58°
Aug
81°
58°
Sep
77°
52°
Oct
63°
40°
Nov
47°
29°
Dec
44°
28°

Which forecast is most accurate in Cheyenne?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
86
/100rank #1
90±1.0°F95±1.6 mph7687% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
63
/100rank #2
79±2.1°F92±2.6 mph2458% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
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AmericanNOAA GFS
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EuropeanECMWF
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±3°77° to 80°±30%50% to 80% chance
Tomorrow±3°70° to 73°±63%33% to 96% chance
Sun±9°62° to 70°±12%55% to 67% chance
Mon±9°64° to 73°±5%5% to 10% chance
Tue±8°69° to 77°±1%22% to 23% chance

The models often agree on temperature and still split on rain, and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.

Sunrise and sunset in Cheyenne

today, local time
Sunrise
06:42
Sunset
19:02
Daylight
12h 20m

Common questions

What's the weather in Cheyenne today?
On this page we show what NWS, American, European each forecast for Cheyenne today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Cheyenne today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Cheyenne and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Cheyenne?
Over the last 30 days, the European model has been the most accurate for Cheyenne (CheckWeather Score 86/100), ahead of the American at 63. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Cheyenne?
July is typically the warmest month in Cheyenne, with average highs around 83°F.
How cold does Cheyenne get?
The coldest month in Cheyenne is January, when overnight lows average about 16°F.
How much rain does Cheyenne get?
Cheyenne sees roughly 18 in of precipitation a year, with May usually the wettest month.

Nearby

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