Bonner County Climate
Bonner County, Idaho
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
45.7°F
Annual Precip
32.4"
Annual Snowfall
68.0"
Extreme Heat Days
14
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6b
Minimum winter temperature range for plant survival
1,656
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Bonner County
Climate Verdict
Bonner County has a cool, averaging 45.7°F annually, moderate rainfall of 32.4 inches per year, rare extreme heat with only 14.1 days above 90°F annually, heavy winter snowfall averaging 68.0 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 28.1°F. summers are pleasantly cool with July averaging 66.1°F. The 38°F seasonal variation provides noticeable but manageable change. December is typically the coldest month and July the warmest.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Bonner County closely matches the Idaho statewide average temperature of 46.5°F, it is also noticeably wetter, receiving 15.4 inches more precipitation than the state average, the county experiences 16.09498418248419 fewer extreme heat days than the state average.
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 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.