Shannon County Climate
Shannon County, Missouri
Avg Annual Temp
56.0°F
Annual Precip
48.2"
Annual Snowfall
5.8"
Extreme Heat Days
46.53333333333333
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Shannon County Weather
A mild and rainy heartland climate
Shannon County averages 56.0°F annually, placing it slightly above the national median temperature. It features a lush, high-precipitation environment typical of the eastern Ozark region.
Warmer and wetter than the state mean
Shannon County surpasses the state average in both temperature (56.0°F vs 54.9°F) and rainfall (48.2" vs 43.8"). This makes it part of the warm, wet corridor that defines southern Missouri.
Consistently wet across the Ozarks
Its 48.2 inches of rain aligns closely with Scott County's 48.8 inches. While it is slightly cooler than the counties further south, it remains much warmer than central Missouri counties like Saline.
Significant heat with mild winter snowfall
The county experiences 47 days of temperatures at or above 90°F. Winter is relatively soft, with only 5.8 inches of annual snowfall and a January average that stays above freezing at 33.0°F.
Stay cool and watch for heavy rain
Air conditioning is a must for the 47 days of extreme summer heat. Given the nearly 50 inches of annual rain, residents should be prepared for high humidity and rapid runoff in the Ozark terrain.
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.