Chelan County Climate
Chelan County, Washington
Avg Annual Temp
48.0°F
Annual Precip
23.9"
Annual Snowfall
96.8"
Extreme Heat Days
25.91428571428571
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Chelan County Weather
A snowy retreat with moderate temperatures
Chelan County averages 48.0°F annually, sitting below the national temperature median. It is characterized by heavy winter precipitation and dry, hot summers.
Below state average temperatures with high snow
At 48.0°F, Chelan is cooler than the state average of 49.9°F. Its standout feature is its 96.8 inches of snow, which dwarfs the state's coastal averages.
The snow capital compared to neighbors
While Benton County to the south sees little snow, Chelan receives nearly 97 inches annually. This makes it a dramatic contrast to the drier, flatter counties in central Washington.
Extreme snow and hot summer days
Chelan experiences 26 days of extreme heat despite its cold 27.7°F January average. The transition from 69.7°F July averages to 96.8 inches of snow defines the local year.
Prepare for heavy snow and sun
Residents must maintain high-quality snow removal equipment for the massive 96.8-inch annual snowfall. Home insulation should be rated for sub-freezing winters and 90°F summer peaks.
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.