Walthall County Climate
Walthall County, Mississippi
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
66.0°F
Annual Precip
62.5"
Annual Snowfall
0.2"
Extreme Heat Days
75
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
8b
Minimum winter temperature range for plant survival
6,237
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Walthall County
Climate Verdict
Walthall County has a warm, averaging 66.0°F year-round, very wet conditions receiving 62.5 inches of precipitation annually, significant summer heat with 75.2 days annually above 90°F, light snow averaging 0.2 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are mild, with January temperatures averaging 48.7°F. summers are hot, with July averaging 80.9°F. The 32°F seasonal variation provides noticeable but manageable change. January is typically the coldest month and August the warmest.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Walthall County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Walthall County closely matches the Mississippi statewide average temperature of 63.9°F, it is somewhat wetter than average for Mississippi.
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 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.