Teton County Climate
Teton County, Wyoming
Avg Annual Temp
35.5°F
Annual Precip
23.6"
Annual Snowfall
166.4"
Extreme Heat Days
1.4299999999999995
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
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 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.