St. Francois County Climate
St. Francois County, Missouri
Avg Annual Temp
56.1°F
Annual Precip
45.2"
Annual Snowfall
8.7"
Extreme Heat Days
31.5
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
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 source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.