Casper Area Economic Development Alliance Inc.
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Climate
Nestled at the base of 9,000 foot Casper Mountain, Casper
averages 275 days of sunshine per year with just 11.2 inches of
precipitation. Characterized as the “comfort zone” by the National
Weather Service, Casper temperatures in July average 87° and
32° in January. Additionally, the low year round humidity keeps
summers from being oppressive and the dry winter temperatures
never seem as cold as in more humid states.

Annual Average Temperature (°F):
............................ 45.2
Monthly Average Winter Low Temperature (°F): ..... 13
Monthly Mean Winter Temperature (°F): ................... 25.2
Monthly Average Summer High Temperature (°F): .. 87
Monthly Mean Summer Temperature (°F): ................ 67.7
Annual Average Snowfall (inches): .......................... . 77
Average Wind Speed (mph): ...................................... 12.9
Annual Average Precipitation (inches): .................... 11.9
Prevailing Winds: ......................................................... Southwesterly
Mean Length of Freeze - Free Period (Days): .......... 122

Source:  Western Regional Climate Center

National Oceanic and Atmospheric Administration
..Wyoming Cities Forecast

Western Regional Climate Center
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© 2008 CAEDA Casper Area Economic Development Alliance, Inc.
300 S.Wolcott Suite 300
Casper, Wyoming 82601-2468
Phone 307.577.7011
Fax 307.577.7014
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