Davis County Climate
Davis County, Iowa
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
51.2°F
Annual Precip
39.1"
Annual Snowfall
24.2"
Extreme Heat Days
22
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5b
Minimum winter temperature range for plant survival
3,456
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Davis County
Climate Verdict
Davis County has a mild, with an average annual temperature of 51.2°F, moderate rainfall of 39.1 inches per year, occasional hot days — 21.7 per year above 90°F, moderate snowfall of 24.2 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 23.4°F. summers are warm — July averages 75.9°F. Residents experience a substantial 53°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Davis County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Davis County is 3.2°F warmer than the Iowa statewide average of 48.0°F, it is somewhat wetter than average for Iowa.
Climate Profile
About Davis County Weather
Approaching the National Temperature Median
Davis County averages 51.2°F annually, bringing it closer to the national median than most of its northern peers. The county receives 39.1 inches of annual precipitation, which is significantly higher than many more arid regions in the Western U.S. This climate is defined by its humid, productive summers and moderately cold winters.
One of Iowa's Warmest Counties
Davis County's 51.2°F average temperature is significantly higher than the Iowa state average of 48.0°F. It also receives about 3 inches more rain annually than the state average of 36.1 inches. This makes it one of the warmer and wetter pockets in the southern Iowa landscape.
Consistent Warmth Across the Southern Border
Davis County shares a similar climate profile with its neighbor Decatur County, which averages 50.9°F. Both counties enjoy warmer winters and more precipitation than northern Iowa counties like Emmet or Dickinson. This southern positioning allows for a slightly longer growing season and fewer extreme cold snaps than the rest of the state.
Frequent Heat and Moderate Snow
The county experiences 22 days of extreme heat annually where temperatures top 90°F, peaking with a 75.9°F July average. Winter brings 24.2 inches of annual snowfall and a January average of 23.4°F. These numbers reflect a region where summer humidity and winter slush are both regular parts of life.
Budget for Both Cooling and Plowing
With over three weeks of 90-degree days, reliable air conditioning is a necessity for Davis County residents. Homeowners should also maintain snow removal equipment to manage the 24.2 inches of annual snowfall. The higher-than-average precipitation means moisture-sealed basements and effective gutter systems are critical for property maintenance.
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.