Hanson County Climate
Hanson County, South Dakota
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
45.0°F
Annual Precip
25.3"
Annual Snowfall
36.3"
Extreme Heat Days
25
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
2,614
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Hanson County
Climate Verdict
Hanson County has a cool, averaging 45.0°F annually, moderate rainfall of 25.3 inches per year, occasional hot days — 25.4 per year above 90°F, moderate snowfall of 36.3 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 15.5°F. summers are warm — July averages 72.1°F. Residents experience a substantial 57°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Hanson County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Hanson County closely matches the South Dakota statewide average temperature of 45.6°F, it is somewhat wetter than average for South Dakota.
Climate Profile
About Hanson County Weather
Continental Extremes in the Heartland
Hanson County records an annual average temperature of 45.0°F, sitting about 10 degrees below the national median. This area is defined by sharp seasonal transitions and healthy annual precipitation levels.
Average Temperatures with Extra Rain
Hanson matches the state's thermal profile with an average of 45.0°F, just shy of the 45.6°F South Dakota mark. However, it is wetter than the average, receiving 25.3 inches of precipitation annually.
Milder Snowfall than Eastern Peers
Hanson County experiences 36.3 inches of annual snow, which is less than the 40.9 inches seen in Hamlin County. It stays slightly warmer in the summer too, with 25 days of 90°F heat compared to Hamlin’s nine.
Humid Summers and Chilly Winters
Summers are warm with a July average of 72.1°F and 25 extreme heat days. Winters are cold and snowy, with January temperatures averaging 15.5°F and annual snow reaching 36.3 inches.
Prepare for Seasonal Humidity Fluctuations
The 25.3 inches of rain can lead to humid summer conditions, making air conditioning a priority. Residents should also winterize their homes to protect against the 18.5°F winter average.
Frequently Asked Questions
What is the average temperature in Hanson County?
How much rain does Hanson County get?
Does it snow in Hanson County?
How hot does Hanson County get in summer?
How cold are winters in Hanson County?
Track your own weather in Hanson County
Ambient Weather personal weather stations give you hyperlocal climate data.
Sponsored
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.