Asotin County Climate
Asotin County, Washington
Climate data coming soon
Avg Annual Temp
—
Annual Precip
15.2"
Annual Snowfall
10.5"
Extreme Heat Days
—
Monthly Temperature
Temperature data coming soon
Precipitation Calendar
Seasonal Overview
Seasonal data coming soon
National Comparison
Data pending
Data pending
Climate Profile
About Asotin County Weather
Dry conditions define the southeast corner
Asotin County receives only 15.2 inches of annual precipitation, which is less than half the national average. While specific local temperature records are limited, the landscape reflects a classic semi-arid climate.
Drier than the average Washington landscape
Washington state averages 38.5 inches of rain, but Asotin sees just 15.2 inches. This precipitation gap places it among the state's more arid eastern territories.
Modest snowfall compared to regional neighbors
With 10.5 inches of annual snow, Asotin is less snowy than nearby Columbia County. It shares a similar dry profile with other counties in the Snake River region.
Winters bring light snow and rain
The county records 10.5 inches of snowfall annually amidst its 15.2 inches of total precipitation. Though specific summer data is unavailable, the low rainfall suggests hot, dry conditions are common.
Plan for dry summers and light snow
Homeowners should focus on water-efficient landscaping to manage the dry 15.2-inch precipitation cycle. Light snow gear is sufficient for the typical 10.5-inch winter accumulation.
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.