Monroe County Climate
Monroe County, Missouri
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
52.9°F
Annual Precip
41.7"
Annual Snowfall
—
Extreme Heat Days
30
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6a
Minimum winter temperature range for plant survival
3,669
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Monroe County
Climate Verdict
Monroe County has a mild, with an average annual temperature of 52.9°F, moderately wet with 41.7 inches of annual precipitation, occasional hot days — 29.9 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 26.8°F. summers are warm — July averages 76.2°F. The 49°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Monroe County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Monroe County closely matches the Missouri statewide average temperature of 54.9°F, it is somewhat drier than average for Missouri.
Climate Profile
About Monroe County Weather
Typical Midwestern Thermal Profile
Monroe County averages 52.9°F annually, placing it slightly below the national median for U.S. counties. The county receives 41.7 inches of annual precipitation, providing ample moisture for its agricultural landscape. This results in a climate that is representative of the upper Midwest.
Cooler than the State Average
With an average temperature of 52.9°F, Monroe sits exactly two degrees below the Missouri state average of 54.9°F. It ranks as one of the cooler counties in Missouri's northeastern quadrant. Winter temperatures are notably sharper here than in central or southern parts of the state.
Matching Marion County Trends
Monroe County is nearly identical in temperature to Marion County, differing by only 0.1 degrees. However, Monroe receives nearly two inches more precipitation than Marion, totaling 41.7 inches annually. Both counties share a July average high of roughly 76°F.
Colder Winters and Humid Summers
January is cold with an average of 26.8°F, while summer features 30 days of extreme heat over 90°F. Although specific snowfall data is limited, the winter average of 29.8°F suggests consistent freezing conditions. July peaks at 76.2°F, bringing typical Missouri humidity.
Ready for Freezing Temps
Homeowners should prioritize pipe insulation as the January average remains well below freezing at 26.8°F. While snowfall records are limited, the 41.7 inches of precipitation often result in icy winter conditions. Expect to run air conditioning frequently during the 30 days of extreme summer 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.