Walworth County Climate
Walworth County, South Dakota
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
45.0°F
Annual Precip
18.2"
Annual Snowfall
33.6"
Extreme Heat Days
22
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
4b
Minimum winter temperature range for plant survival
2,671
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Walworth County
Climate Verdict
Walworth County has a cool, averaging 45.0°F annually, semi-arid conditions with only 18.2 inches of annual precipitation, occasional hot days — 22.399999999999995 per year above 90°F, moderate snowfall of 33.6 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 15.2°F. summers are warm — July averages 73.3°F. Residents experience a substantial 58°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Walworth County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Walworth County closely matches the South Dakota statewide average temperature of 45.6°F, it is somewhat drier than average for South Dakota.
Climate Profile
About Walworth County Weather
Cold and Dry Northern Plains
Walworth County averages 45.0°F, placing it firmly in the cold-temperate zone. Its 18.2 inches of precipitation is well below the national median, characterizing it as a semi-arid region.
Slightly Cooler Than the State Average
The county's average temperature falls just below the South Dakota average of 45.6°F. It is also significantly drier than the state average for precipitation.
Very Dry Compared to Eastern Peers
With only 18.2 inches of rain, Walworth is much drier than Spink County's 22.8 inches. This limited moisture influences the local vegetation and agricultural choices.
Frigid Januaries and Clear Summers
January is very cold with a 15.2°F average, while summer highs reach a comfortable 70.6°F. The county sees 22 days of extreme heat and 33.6 inches of snow annually.
Invest in Efficient Home Heating
Prioritize home heating efficiency to manage the 18.3°F winter average. Xeriscaping is a practical choice for the yard to thrive in the low 18.2-inch annual rainfall.
Frequently Asked Questions
What is the average temperature in Walworth County?
How much rain does Walworth County get?
Does it snow in Walworth County?
How hot does Walworth County get in summer?
How cold are winters in Walworth County?
Track your own weather in Walworth 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.