Sublette County Climate
Sublette County, Wyoming
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
35.9°F
Annual Precip
12.1"
Annual Snowfall
80.8"
Extreme Heat Days
2
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
4b
Minimum winter temperature range for plant survival
835
Limited to cold-tolerant varieties
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Sublette County
Climate Verdict
Sublette County has a cold, with an average annual temperature of 35.9°F, arid conditions receiving just 12.1 inches of precipitation annually, rare extreme heat with only 1.8499999999999999 days above 90°F annually, heavy winter snowfall averaging 80.8 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 12.1°F. summers are pleasantly cool with July averaging 60.1°F. The 48°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
Sublette County is 8.0°F cooler than the Wyoming statewide average of 43.8°F, the county experiences 21.509895684026116 fewer extreme heat days than the state average.
Climate Profile
About Sublette County Weather
Among the Nation's Coldest Spots
Sublette County averages a chilly 35.9°F annually, nearly 18 degrees colder than the national median. This high-altitude climate represents one of the most frigid environments in the continental U.S.
One of Wyoming's Iceboxes
The county stays significantly colder than the Wyoming state average of 43.8°F. It receives 12.1 inches of precipitation, which is slightly below the 13.9-inch state norm.
Frigid Even for the Rockies
Sublette is colder than Sweetwater County to the south, where temperatures average a much milder 42.9°F. It shares a high-snowfall profile with its western neighbor, Teton.
Summer Heat is a Rarity
The county sees only 2 days per year above 90°F, with July temperatures averaging just 60.1°F. Winters are brutal, averaging 13.4°F with 80.8 inches of annual snow.
Winter Gear is Mandatory
Heavy-duty winter insulation and engine block heaters are standard requirements for life here. Air conditioning is rarely necessary given the cool 57.2°F summer 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.