Worth County Climate
Worth County, Iowa
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
43.0°F
Annual Precip
35.5"
Annual Snowfall
40.2"
Extreme Heat Days
4
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
2,225
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Worth County
Climate Verdict
Worth County has a cool, averaging 43.0°F annually, moderate rainfall of 35.5 inches per year, rare extreme heat with only 4.3 days above 90°F annually, moderate snowfall of 40.2 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 12.6°F. summers are pleasantly cool with July averaging 69.0°F. Residents experience a substantial 56°F difference between winter and summer.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Worth County is 5.0°F cooler than the Iowa statewide average of 48.0°F.
Climate Profile
About Worth County Weather
A Cold Northern Climate Profile
Worth County's 43.0°F annual average is significantly lower than the national median. This northern location results in shorter summers and a much colder overall climate profile.
One of Iowa's Coldest Counties
Worth County ranks well below the state average, sitting 5 degrees cooler than the 48.0°F Iowa mean. Its 35.5 inches of precipitation closely matches the state's average of 36.1 inches.
Cooler Summers than Southern Neighbors
Worth County only sees 4 days of extreme heat annually, far fewer than counties in southern or western Iowa. It records 40.2 inches of snowfall, which is higher than many regional peers.
Dominant Winters and Mild Summers
Winter is intense here, with a January average of only 12.6°F. Summers remain mild and pleasant, featuring a July average of 69.0°F and very few days reaching 90°F.
Winter Preparedness is Top Priority
With over 40 inches of annual snow, high-quality winter gear and snow blowers are essential. Residents should prioritize home insulation for the frigid 16.3°F winter average.
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.