Pearl River County Climate
Pearl River County, Mississippi
Avg Annual Temp
66.2°F
Annual Precip
65.8"
Annual Snowfall
0.1"
Extreme Heat Days
77.5
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Pearl River County Weather
A Warm Subtropical Southern Climate
Pearl River County maintains an average annual temperature of 66.2°F, significantly warmer than the national median of approximately 54°F. The region experiences a classic humid subtropical climate with long summers and short, mild winters.
Above Average Heat in South Mississippi
The county's annual average of 66.2°F sits well above the Mississippi state average of 63.9°F. This makes it one of the warmer locations in the state, driven by its proximity to the Gulf Coast.
High Rainfall Compared to Neighbors
With 65.8 inches of annual precipitation, Pearl River is much wetter than the state average of 59.6 inches. It receives more rain than northern neighbors like Rankin County, which sees only 57.4 inches annually.
Sweltering Summers and Barely Any Snow
Residents face 78 extreme heat days per year where temperatures hit or exceed 90°F. Winter remains mild with an average of 51.3°F and a negligible 0.1 inches of annual snowfall.
Prepare for Humidity and Heavy Rain
Efficient HVAC systems are essential here to manage 78 days of intense heat and high humidity. Homeowners should also maintain clear gutters and drainage systems to handle the significant 65.8 inches of yearly rainfall.
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.