St. Francois County Climate
St. Francois County, Missouri
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
56.1°F
Annual Precip
45.2"
Annual Snowfall
8.7"
Extreme Heat Days
32
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
6b
Minimum winter temperature range for plant survival
4,114
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: St. Francois County
Climate Verdict
St. Francois County has a mild, with an average annual temperature of 56.1°F, moderately wet with 45.2 inches of annual precipitation, occasional hot days — 31.5 per year above 90°F, light snow averaging 8.7 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 32.7°F. summers are warm — July averages 77.7°F. The 45°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
The moderate temperatures support hiking, cycling, and camping comfortably in spring, summer, and fall.
Regional Context
St. Francois County closely matches the Missouri statewide average temperature of 54.9°F.
Climate Profile
About St. Francois County Weather
Mild and Moist Transitional Climate
St. Francois County averages 56.1°F annually, placing it significantly above the national median temperature. This region is characterized by higher-than-average humidity and rainfall.
A Wetter Corner of Missouri
At 45.2 inches of annual precipitation, St. Francois is noticeably wetter than the state average of 43.8 inches. Its 56.1°F annual temperature also ranks it among the warmer counties in Missouri.
Warmer Winters than St. Louis
The county enjoys milder winters than its northern neighbors, with a December-February average of 35.3°F. It sees fewer extreme heat days (32) than the urban core to its north.
Rainy Springs and Light Snow
The county receives just 8.7 inches of snow per year, as many winter storms transition quickly to rain. Summer remains warm with a July average of 77.7°F and plenty of moisture.
Manage Moisture and Moderate Heat
Homeowners should focus on basement waterproofing and drainage due to the high 45.2-inch annual rainfall. The 32 days of extreme heat suggest a need for reliable, but not constant, cooling.
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.