Warren County Climate
Warren County, Missouri
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
54.5°F
Annual Precip
41.5"
Annual Snowfall
—
Extreme Heat Days
31
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6b
Minimum winter temperature range for plant survival
3,915
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Warren County
Climate Verdict
Warren County has a mild, with an average annual temperature of 54.5°F, moderately wet with 41.5 inches of annual precipitation, occasional hot days — 30.6 per year above 90°F. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 29.3°F. summers are warm — July averages 77.1°F. The 48°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Warren County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Warren County closely matches the Missouri statewide average temperature of 54.9°F, it is somewhat drier than average for Missouri.
Climate Profile
About Warren County Weather
A Middle-of-the-Road Climate
Warren County averages 54.5°F, which aligns closely with both the national median and the Missouri state average. The region enjoys a classic four-season temperate climate.
Stable State Temperatures
The annual average of 54.5°F is nearly identical to the Missouri state average of 54.9°F. This makes Warren one of the most representative counties for the state's overall weather.
Slightly Drier Than Neighbors
Warren receives 41.5 inches of rain, which is slightly lower than the Missouri state average of 43.8 inches. It experiences 31 extreme heat days, matching many neighboring central counties.
Average Summers, Cold Januaries
July averages 77.1°F, while January temperatures dip to an average of 29.3°F. While specific snowfall data is currently limited, the winter average temperature is 32.3°F.
Standard Midwestern Maintenance
Residents should plan for 31 days of extreme heat with reliable cooling systems. Since rain is below the state average, garden irrigation may be helpful during the July heat.
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.