Cheyenne, WY Climate & Monthly Averages
The climate of 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.
Climate 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.
Monthly climate table
| 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% |
Cheyenne month by month
Cheyenne weather in January
January brings highs around 37°F (3°C), lows near 20°F (-7°C), about 5 wet days and roughly 3 snowy days - typically the coldest month and the driest month of the year in Cheyenne.
Cheyenne weather in February
February brings highs around 38°F (3°C), lows near 19°F (-7°C), about 6 wet days and roughly 4 snowy days.
Cheyenne weather in March
March brings highs around 46°F (8°C), lows near 25°F (-4°C), about 8 wet days and roughly 5 snowy days.
Cheyenne weather in April
April brings highs around 54°F (12°C), lows near 31°F (-1°C), about 10 wet days and roughly 4 snowy days.
Cheyenne weather in May
May brings highs around 62°F (17°C), lows near 40°F (5°C), about 16 wet days and roughly 2 snowy days - typically the wettest month of the year in Cheyenne.
Cheyenne weather in June
June brings highs around 77°F (25°C), lows near 53°F (12°C), about 10 wet days - typically the sunniest month of the year in Cheyenne.
Cheyenne weather in July
July brings highs around 83°F (28°C), lows near 59°F (15°C), about 9 wet days - typically the hottest month of the year in Cheyenne.
Cheyenne weather in August
August brings highs around 81°F (27°C), lows near 58°F (14°C), about 8 wet days.
Cheyenne weather in September
September brings highs around 76°F (24°C), lows near 51°F (11°C), about 5 wet days.
Cheyenne weather in October
October brings highs around 59°F (15°C), lows near 37°F (3°C), about 5 wet days and roughly 2 snowy days.
Cheyenne weather in November
November brings highs around 47°F (8°C), lows near 28°F (-2°C), about 5 wet days and roughly 3 snowy days.
Cheyenne weather in December
December brings highs around 38°F (4°C), lows near 22°F (-6°C), about 4 wet days and roughly 3 snowy days.
Seasons in Cheyenne
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.
Climate questions, answered
What is the average temperature in Cheyenne?
Is Cheyenne hot in summer?
Is Cheyenne cold in winter?
How many rainy days does Cheyenne get in a year?
Best time to visit Cheyenne
The best time to visit Cheyenne is generally June to October, when temperatures are at their most comfortable before or after the peak heat. Daytime temperatures in that window typically sit near 75°F (24°C).
Pack for Cheyenne with a heavy insulated coat, hat and gloves for winter; rain gear if you travel around May. Evenings can feel noticeably cooler than afternoons - July nights average 59°F (15°C).
Cheyenne temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.