Washington County Climate
Washington County, Minnesota
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
46.3°F
Annual Precip
34.1"
Annual Snowfall
—
Extreme Heat Days
11
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
2,830
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Washington County
Climate Verdict
Washington County has a cool, averaging 46.3°F annually, moderate rainfall of 34.1 inches per year, rare extreme heat with only 11.15 days above 90°F annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 15.8°F. summers are warm — July averages 72.8°F. Residents experience a substantial 57°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Washington County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Washington County is 3.6°F warmer than the Minnesota statewide average of 42.8°F, it is somewhat wetter than average for Minnesota.
Climate Profile
About Washington County Weather
Urban Heat and Continental Cold
Washington County averages 46.3°F annually, making it one of the warmer spots in this northern state. Still, it remains several degrees cooler than the national median temperature.
One of Minnesota's Warmest Counties
The county's 46.3°F average is significantly higher than the Minnesota average of 42.8°F. It ranks near the top of the state for annual warmth due to its southern location.
Warmer and Drier than Waseca
Washington is nearly two degrees warmer than Waseca County's 44.6°F average. It receives 34.1 inches of rain, which is higher than the state average but lower than Waseca.
Milder Winters and Toasty Summers
July averages 72.8°F with 11 days of extreme heat. Winter is relatively mild for Minnesota, featuring a 15.8°F January average and a 19.3°F winter mean.
Urban Cooling and Winter Readiness
Air conditioning is important for the 11 days of extreme summer heat. While county-specific snowfall data is limited, residents should plan for regional winter averages typical of the metro area.
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.