Marion County Climate
Marion County, Mississippi
Avg Annual Temp
66.5°F
Annual Precip
61.9"
Annual Snowfall
—
Extreme Heat Days
90.1
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Marion County Weather
Tropical influence in Marion
Marion County is quite warm with an average annual temperature of 66.5°F. This makes it one of the hotter regions in the nation compared to the 53°F national median.
Among the state's warmest
The 66.5°F average annual temperature is significantly higher than the Mississippi state average of 63.9°F. It ranks as one of the warmest counties in the southern tier of the state.
Hotter and wetter than Lincoln
Marion is over two degrees warmer than Lincoln County to its northwest. It is also one of the wettest in the region, receiving 61.9 inches of annual precipitation compared to Lincoln's 61.6.
Persistent heat and no snow
Residents navigate 90 days of extreme heat per year, with summer averages reaching 81.3°F. Snow data is unavailable, reflecting a climate where freezing precipitation is exceptionally rare.
Prepare for high humidity
The combination of 61.9 inches of rain and 90 days of extreme heat creates high humidity year-round. Residents should invest in moisture-resistant materials and high-capacity cooling for their homes.
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.