DeKalb County Climate
DeKalb County, Missouri
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
52.0°F
Annual Precip
39.5"
Annual Snowfall
20.7"
Extreme Heat Days
32
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6a
Minimum winter temperature range for plant survival
3,565
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: DeKalb County
Climate Verdict
DeKalb County has a mild, with an average annual temperature of 52.0°F, moderate rainfall of 39.5 inches per year, occasional hot days — 32.45 per year above 90°F, moderate snowfall of 20.7 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 24.9°F. summers are warm — July averages 76.6°F. Residents experience a substantial 52°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for DeKalb County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
DeKalb County closely matches the Missouri statewide average temperature of 54.9°F, it is somewhat drier than average for Missouri.
Climate Profile
About DeKalb County Weather
A cool northern Missouri climate
DeKalb County’s 52.0°F annual average is below the national median, indicating a cooler-leaning profile. The area experiences brisk winters and shorter periods of intense summer heat.
Below the Missouri temperature norm
The county’s 52.0°F average sits nearly 3 degrees below the Missouri state average of 54.9°F. It also records 20.7 inches of snow, nearly double what some southern counties receive.
Heavy snow compared to neighbors
DeKalb receives 20.7 inches of snow annually, outpacing Daviess County’s 19.1 inches. It also experiences slightly more extreme heat days than its immediate eastern neighbor.
Snowy winters and 32 heat days
Winter is the dominant season, featuring a 28.1°F average temperature and over 20 inches of snow. July remains warm at 76.6°F, contributing to 32 days above 90°F.
Prioritize snow and ice management
A high-quality snow blower is essential for managing the 20.7 inches of annual accumulation. Ensure your furnace is serviced annually to handle the deep 24.9°F January freezes.
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.