Marion County Climate
Marion County, Mississippi
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
66.5°F
Annual Precip
61.9"
Annual Snowfall
—
Extreme Heat Days
90
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
8b
Minimum winter temperature range for plant survival
6,453
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Marion County
Climate Verdict
Marion County has a warm, averaging 66.5°F year-round, very wet conditions receiving 61.9 inches of precipitation annually, significant summer heat with 90.1 days annually above 90°F. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are mild, with January temperatures averaging 48.8°F. summers are hot, with July averaging 82.0°F. The 33°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Summer outdoor activities should be planned for early morning or evening to avoid extreme heat.
Regional Context
Marion County closely matches the Mississippi statewide average temperature of 63.9°F, it is somewhat wetter than average for Mississippi, the county experiences 16.967694063926956 more extreme heat days than the state average.
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 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.