Blaine County Climate
Blaine County, Idaho
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
41.3°F
Annual Precip
15.2"
Annual Snowfall
73.8"
Extreme Heat Days
13
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5b
Minimum winter temperature range for plant survival
1,360
Limited to cold-tolerant varieties
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Blaine County
Climate Verdict
Blaine County has a cool, averaging 41.3°F annually, semi-arid conditions with only 15.2 inches of annual precipitation, rare extreme heat with only 13.4 days above 90°F annually, heavy winter snowfall averaging 73.8 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 19.5°F. summers are pleasantly cool with July averaging 64.5°F. The 45°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Blaine County is 5.2°F cooler than the Idaho statewide average of 46.5°F, the county experiences 16.794984182484185 fewer extreme heat days than the state average.
Climate Profile
About Blaine County Weather
A high-altitude, cold-weather destination
Blaine County's 41.3°F average temperature is over 10 degrees colder than the national median. This reflects its rugged mountain geography and famous high-elevation resorts.
Much colder than the Idaho norm
At five degrees below the state average of 46.5°F, Blaine is one of Idaho's chillier regions. The county is defined by its long, cold winters rather than its short summers.
Snowier than the southern valleys
With 73.8 inches of annual snow, Blaine is much snowier than neighboring Bingham County. It also stays significantly cooler during the summer, with far fewer 90-degree days.
Heavy snow and limited heat
Winter is the dominant season, bringing an average of 19.5°F in January and nearly 74 inches of snow. Summers are very mild, with only 13 days of extreme heat over 90°F.
Top-tier winter readiness is required
Residents need heavy-duty snow removal equipment and specialized winter tires to manage 73.8 inches of snow. Home heating systems must be reliable enough to handle winter averages of 21.0°F.
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.