Payette County Climate
Payette County, Idaho
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
53.2°F
Annual Precip
11.3"
Annual Snowfall
—
Extreme Heat Days
54
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7a
Minimum winter temperature range for plant survival
3,204
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Payette County
Climate Verdict
Payette County has a mild, with an average annual temperature of 53.2°F, arid conditions receiving just 11.3 inches of precipitation annually, occasional hot days — 54.3 per year above 90°F. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 31.5°F. summers are warm — July averages 76.4°F. The 45°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Payette County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Payette County is 6.7°F warmer than the Idaho statewide average of 46.5°F, it is also noticeably drier, receiving 5.7 inches less precipitation than the state average, the county experiences 24.10501581751581 more extreme heat days than the state average.
Climate Profile
About Payette County Weather
Sun-Drenched and Arid Valley
Payette's 53.2°F average temperature makes it a warm outlier compared to the national median. It receives just 11.3 inches of precipitation, characterizing it as a dry, sun-drenched valley.
One of Idaho's Hottest Counties
This is one of Idaho’s hottest counties, topping the state average of 46.5°F by nearly seven degrees. It consistently ranks in the top tier for temperature and heat frequency statewide.
Treasure Valley Heat Leader
It shares the heat of the Treasure Valley with Canyon County but remains drier than the state average. Its low elevation keeps it much warmer than the central Idaho mountains.
Intense Summer Heat Waves
The county endures a grueling 54 days of extreme heat over 90°F each year. July averages a sweltering 76.4°F, while winters remain relatively mild with a 33.8°F average.
Invest in High-Performance Cooling
Robust cooling systems are a necessity for the nearly two months of 90-degree weather. While snowfall data is incomplete, focus winter prep on the chilly 31.5°F January average.
Frequently Asked Questions
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Track your own weather in Payette County
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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.