Fremont County Climate
Fremont County, Wyoming
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
43.4°F
Annual Precip
10.4"
Annual Snowfall
43.8"
Extreme Heat Days
22
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
1,919
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Fremont County
Climate Verdict
Fremont County has a cool, averaging 43.4°F annually, arid conditions receiving just 10.4 inches of precipitation annually, occasional hot days — 21.875 per year above 90°F, moderate snowfall of 43.8 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 20.1°F. summers are pleasantly cool with July averaging 68.8°F. The 49°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Fremont County closely matches the Wyoming statewide average temperature of 43.8°F, it is somewhat drier than average for Wyoming.
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 sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.