Forrest County Climate
Forrest County, Mississippi
Avg Annual Temp
66.5°F
Annual Precip
61.7"
Annual Snowfall
0.9"
Extreme Heat Days
90.25
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Forrest County Weather
A Warm Subtropical Southern Hub
Forrest County maintains an average annual temperature of 66.5°F, placing it significantly higher than the national median. This humid subtropical climate stays consistently warmer than the broader United States average throughout the year.
Outpacing the Mississippi State Average
With an annual average of 66.5°F, Forrest County is warmer than the Mississippi state average of 63.9°F. Its location in the southern part of the state contributes to this thermal gap of 2.6 degrees.
Comparing Regional Rainfall and Heat
The county receives 61.7 inches of rain annually, which exceeds the state average of 59.6 inches. While it shares a similar climate with neighboring Pearl River, it remains slightly cooler than coastal Harrison County.
Ninety Days of Extreme Summer Heat
Residents face 90 days per year with temperatures reaching 90°F or higher. Winters remain mild with a 51.0°F average and a negligible 0.9 inches of annual snowfall.
Prioritizing Cooling and Moisture Control
Homeowners should invest in high-efficiency HVAC systems to manage three full months of extreme heat. Given the 61.7 inches of annual rain, maintaining clear gutters and proper site drainage is essential.
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.