Wyoming, USA
Long term weather forecast
Long term weather forecast

August weather forecast and Climate
Cheyenne, WY

  • Average high temperature in August: 81.2°F

Warmest month (with highest average high temperature) is July (83.4°F).
Month with lowest average high temperature is December (38.2°F).

  • Average low temperature in August: 54.1°F

Month with highest average low temperature is July (55.5°F).
Coldest month (with lowest average low temperature) is December (17.3°F).

  • Average humidity in August: 51.4%

Month with highest relative humidity is March (56.1%).
Month with lowest relative humidity is October (50%).

  • Average rainfall in August: 2"

Wettest months (with highest rainfall) are May and June (2.3").
Driest month (with lowest rainfall) is January (0.3").

  • Average rainfall days in August: 11 days

Month with highest number of rainy days is May (12.4 days).
Month with lowest number of rainy days is January (4.9 days).

  • Average snowfall in August: 0"

Month with highest snowfall is March (11.3").
Months with lowest snowfall are June, July and August (0").

  • Average snowfall days in August: 0 days

Month with highest number of snowfall days is March (7.8 days).
Months with lowest number of snowfall days are July and August (0 days).

  • Average daylight in August: 14h

Months with longest days are May, June and July (Average daylight: 15h).
Month with shortest days is December (Average daylight: 9h).

  • Average sunshine in August: 9.6h

Month with most sunshine is July (Average sunshine: 10.2h).
Month with least sunshine is December (Average sunshine: 5.7h).

  • Average UV index in August: 9

Months with highest UV index are June and July (UV index 10).
Month with lowest UV index is December (UV index 1).