Cheyenne, WY Weather
Cheyenne hourly forecast: next 24 hours
Today's high of 92°F (33°C) is about 11°F (6°C) above the typical August high of 81°F (27°C).
Current conditions in detail
Cheyenne weather tomorrow (Friday, August 7)
Tomorrow in Cheyenne looks sunny, with a high of 92° and an overnight low of 64°. Rain is unlikely (0% chance). Winds top out near 14 mph, and the UV index reaches 9 (very high).
Cheyenne 14-day forecast
About the weather in Cheyenne
Located in Wyoming, United States, Cheyenne experiences a semi-arid climate with big day-to-night temperature swings and modest rainfall. Afternoon temperatures peak near 83°F (28°C) in July and dip to about 37°F (3°C) in January, with around 17.0 inches (431 mm) of precipitation falling across the year.
Cheyenne weather: quick facts
- Hottest month: July - highs near 83°F (28°C)
- Coldest month: January - highs near 37°F (3°C)
- Record high: 96°F (36°C) · Record low: -26°F (-32°C) (2015–2024)
- Wettest month: May (16 rainy days) · Sunniest: June (12.9 h sun/day)
- Climate type: semi-arid - big day-to-night temperature swings and modest rainfall
- Snow: about 27 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 83°F (28°C) and overnight lows stay near 59°F (15°C). The coolest month is January, with typical highs of 37°F (3°C) and lows around 20°F (-7°C). Based on 2015–2024 weather data, temperatures have reached as high as 96°F (36°C) and dropped as low as -26°F (-32°C).
Rain, sun and snow
May is usually the wettest month. It brings about 3.8 inches (97 mm) of rain over 16 days, while January is the driest. June brings the most sunshine, averaging 12.9 hours of sun a day. Snow falls on about 27 days in a typical year, mostly from October through May.
Season by season
Spring (March through May)
Spring in Cheyenne stays on the cool side of mild, with daytime highs averaging 54°F (12°C) and nights around 32°F (0°C); expect showers on roughly 33 days across the season, plus around 11 snowy days.
Summer (June through August)
Summer in Cheyenne brings comfortable warmth, with daytime highs averaging 80°F (27°C) and nights around 57°F (14°C); expect showers on roughly 27 days across the season.
Fall (September through November)
Fall in Cheyenne is mild, with daytime highs averaging 61°F (16°C) and nights around 39°F (4°C); rain falls on about 14 days over the three months, plus around 6 snowy days.
Winter (December through February)
Winter in Cheyenne is frigid, with daytime highs averaging 38°F (3°C) and nights around 20°F (-7°C); rain falls on about 15 days over the three months, plus around 10 snowy days. Wind makes those temperatures feel harsher than they sound - pair the forecast winds with the wind speed converter to judge conditions on exposed skin.
Average temperatures in Cheyenne by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 37° | 20° | 5 | 0.7 in | 7.9 h/day | 57% |
| February | 38° | 19° | 6 | 0.8 in | 8.9 h/day | 53% |
| March | 46° | 25° | 8 | 1.8 in | 9.8 h/day | 55% |
| April | 54° | 31° | 10 | 2.3 in | 10.5 h/day | 52% |
| May | 62° | 40° | 16 | 3.8 in | 10.9 h/day | 61% |
| June | 77° | 53° | 10 | 1.7 in | 12.9 h/day | 48% |
| July | 83° | 59° | 9 | 1.5 in | 12.9 h/day | 46% |
| August | 81° | 58° | 8 | 1.1 in | 12.4 h/day | 45% |
| September | 76° | 51° | 5 | 0.8 in | 11.0 h/day | 42% |
| October | 59° | 37° | 5 | 0.9 in | 9.3 h/day | 48% |
| November | 47° | 28° | 5 | 0.9 in | 8.3 h/day | 50% |
| December | 38° | 22° | 4 | 0.7 in | 7.5 h/day | 52% |