Butte County Climate
Butte County, Idaho
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
42.5°F
Annual Precip
10.9"
Annual Snowfall
35.0"
Extreme Heat Days
23
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
1,802
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Butte County
Climate Verdict
Butte County has a cool, averaging 42.5°F annually, arid conditions receiving just 10.9 inches of precipitation annually, occasional hot days — 23.060000000000002 per year above 90°F, moderate snowfall of 35.0 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 18.0°F. summers are pleasantly cool with July averaging 68.5°F. Residents experience a substantial 50°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Butte County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Butte County is 4.0°F cooler than the Idaho statewide average of 46.5°F, it is also noticeably drier, receiving 6.1 inches less precipitation than the state average.
Climate Profile
About Butte County Weather
An Arid and High-Desert Climate
Butte County is significantly colder and drier than the national average, with an annual temp of 42.5°F and only 10.9 inches of rain. This environment reflects a harsh, high-desert ecosystem.
Colder and Drier than Idaho Averages
Butte County averages four degrees colder than the state average of 46.5°F. Its 10.9 inches of annual precipitation is far below the state average of 17.0 inches, marking it as a dry region.
Extreme Cold Compared to Southern Cassia
Butte's winter average of 19.7°F is much harsher than Cassia County's 30.0°F. While both are dry, Butte receives 35.0 inches of snow, nearly double Cassia's 18.5 inches.
Harsh Winters and Hot Summer Days
The county experiences extreme seasonal shifts, from a bitter 18.0°F average in January to 23 days of heat over 90°F. Winter is defined by 35.0 inches of snow and a low December-February average of 19.7°F.
Water Conservation and Winter Insulation
Given the low 10.9 inches of precipitation, xeriscaping and water conservation are practical for local homeowners. High-efficiency furnaces are critical for surviving the sub-20°F winter averages.
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.