Fremont County Climate
Fremont County, Wyoming
Avg Annual Temp
43.4°F
Annual Precip
10.4"
Annual Snowfall
43.8"
Extreme Heat Days
21.875
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Fremont County Weather
A Cold and Arid Basin Climate
Fremont County averages 43.4°F annually, falling well short of the national median of 54°F. Its 10.4 inches of precipitation makes it much drier than most of the United States.
Representative of the Wyoming Average
Fremont's 43.4°F average temperature is nearly identical to the state average of 43.8°F. However, it is slightly drier than the rest of the state, receiving 10.4 inches of rain versus the 13.9-inch state average.
Cooler and Wetter than Big Horn
Fremont is cooler than neighboring Big Horn County by about 2.4 degrees annually. It also receives 3.3 inches more precipitation and more than double the annual snowfall at 43.8 inches.
Crisp Winters and Warm Summers
January is cold with an average of 20.1°F, while July heats up to an average of 68.8°F. The county experiences 22 days of extreme heat and 43.8 inches of annual snow.
Prepare for Dry Conditions and Cold
With only 10.4 inches of annual precipitation, water conservation is a practical necessity for residents. Home heating systems should be serviced annually to handle the sub-freezing 21.4°F winter average.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.