Bonner County Climate
Bonner County, Idaho
Avg Annual Temp
45.7°F
Annual Precip
32.4"
Annual Snowfall
68.0"
Extreme Heat Days
14.1
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Bonner County Weather
A Damp and Cool Northern Idaho Climate
Bonner County averages 45.7°F annually, which is significantly cooler than the national median temperature. With 32.4 inches of precipitation, it is one of the wettest environments in the Intermountain West.
Surpassing Idaho's Average Annual Precipitation
While Idaho's average annual precipitation is 17.0 inches, Bonner County receives nearly double that amount at 32.4 inches. Its annual temperature sits just below the state average of 46.5°F.
Wetter and Snowier Than Regional Neighbors
Compared to nearby Boundary County's 21.3 inches of rain, Bonner County is much wetter with 32.4 inches. It also sees 68.0 inches of snow annually, outpacing the 53.8 inches found in the northern neighbor.
Heavy Snow and Temperate Summers
Winter brings an average of 68.0 inches of snow and a chilly December-February average of 28.9°F. Summers remain mild with a July average of 66.1°F and only 14 days topping 90°F.
Prepare for Snow Removal and Humidity
Residents need high-capacity snow blowers to manage the 68.0 inches of annual snowfall. Due to the high precipitation levels, ensuring proper basement drainage and roof maintenance is essential.
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.