Teton County Climate
Teton County, Wyoming
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
35.5°F
Annual Precip
23.6"
Annual Snowfall
166.4"
Extreme Heat Days
1
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
4b
Minimum winter temperature range for plant survival
735
Limited to cold-tolerant varieties
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Teton County
Climate Verdict
Teton County has a cold, with an average annual temperature of 35.5°F, semi-arid conditions with only 23.6 inches of annual precipitation, rare extreme heat with only 1.4299999999999997 days above 90°F annually, heavy winter snowfall averaging 166.4 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 14.0°F. summers are cool, with July averaging only 58.8°F. The 45°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
Teton County is 8.3°F cooler than the Wyoming statewide average of 43.8°F, it is also noticeably wetter, receiving 9.7 inches more precipitation than the state average, the county experiences 21.929895684026118 fewer extreme heat days than the state average.
Climate Profile
About Teton County Weather
An Extreme Alpine Environment
Teton County is one of the coldest spots in America with an annual average of 35.5°F. This is nearly 18 degrees below the national median.
Wyoming's Coldest and Wettest
Teton ranks as the coldest county in the state and its wettest, with 23.6 inches of precipitation. This far exceeds the Wyoming state average of 13.9 inches.
A Regional Snow Leader
With 166.4 inches of annual snow, Teton dwarfs neighbors like Sublette which sees only 80.8 inches. This massive accumulation defines the local geography and lifestyle.
Snow Rules the Year
Extreme heat is non-existent with only 1 day over 90°F annually and a July average of 58.8°F. Winter is long and harsh, averaging 15.2°F from December through February.
Equip for Deep Powder
Residents must invest in professional-grade snow removal and high-performance winter clothing. Home cooling is unnecessary, but robust heating systems are a matter of survival.
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.