Walthall County Climate
Walthall County, Mississippi
Avg Annual Temp
66.0°F
Annual Precip
62.5"
Annual Snowfall
0.2"
Extreme Heat Days
75.2
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Walthall County Weather
The Warmth of South Mississippi
Walthall County is significantly warmer than the rest of the nation, with an average temperature of 66.0°F. This humid subtropical environment is also very wet, recording 62.5 inches of precipitation every year.
Above the Mississippi State Average
With an annual average of 66.0°F, Walthall is warmer than the state average of 63.9°F. It ranks among the warmer southern counties, influenced by its proximity to the Gulf of Mexico.
Hotter and Wetter than the Delta
Walthall is much warmer than Tunica, averaging about three degrees higher year-round. It also receives 62.5 inches of rain, making it one of the wettest spots in the region compared to the state average of 59.6 inches.
Seventy-Five Days of Extreme Heat
Summer temperatures average 80.4°F, and the county endures 75 days where temperatures hit or exceed 90°F. Winters are very mild, with an average temperature of 50.6°F and almost no measurable snow.
Plan for Long, Hot Summers
High-efficiency HVAC systems are a necessity to combat 75 days of extreme heat and high humidity. Because snowfall is negligible at 0.2 inches, residents should focus their home maintenance on moisture control and rain drainage.
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.