Jackson County Climate
Jackson County, Mississippi
Avg Annual Temp
66.5°F
Annual Precip
67.2"
Annual Snowfall
0.1"
Extreme Heat Days
59.7
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Jackson County Weather
Warm Coastal Living on the Gulf
Jackson County averages 66.5°F, which is significantly higher than the national median temperature. The maritime influence of the Gulf of Mexico creates a consistently warm and humid environment.
One of Mississippi's Warmest Counties
The county’s 66.5°F average outpaces the state average of 63.9°F by a wide margin. It ranks as a top-tier warm zone due to its southern coastal position.
Leading the State in Precipitation
Jackson receives a massive 67.2 inches of rain annually, far more than the state average of 59.6 inches. This makes it one of the wettest counties in the entire region.
Tropical Summers and Snowless Winters
July averages 80.8°F with high humidity, though the ocean breeze keeps extreme heat days to 60 per year. Winters are very mild at 52.2°F and snowfall is practically nonexistent at 0.1 inches.
Managing High Humidity and Rain
Residents must invest in high-capacity drainage and moisture control to manage 67.2 inches of annual rain. The mild winters require only light layers, as freezing temperatures are rare.
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.