Jefferson Davis Parish Climate
Jefferson Davis Parish, Louisiana
Avg Annual Temp
67.8°F
Annual Precip
63.5"
Annual Snowfall
0.1"
Extreme Heat Days
72.6
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Jefferson Davis Parish Weather
Deep South Warmth and High Rainfall
The average annual temperature of 67.8°F is significantly warmer than the national median, placing it in a humid subtropical zone. The parish also sees 63.5 inches of rain, nearly double the national average for annual precipitation.
Slightly Warmer than State Average
At 67.8°F, the parish is slightly warmer than the Louisiana state average of 67.0°F. It also ranks as wetter than the state average, recording 63.5 inches of rainfall compared to the statewide 60.8 inches.
Cooler than Neighboring Lafayette
Jefferson Davis Parish is slightly cooler than neighboring Lafayette Parish, which averages 68.8°F. Both parishes share high precipitation levels, with Jefferson Davis receiving 63.5 inches of annual rain.
Sweltering Summers and Damp Winters
The area endures 73 days of extreme heat above 90°F, with July averages reaching 81.9°F. Winters are very mild, with a January average of 50.9°F and negligible snowfall of just 0.1 inches.
Invest in High-Efficiency Cooling
With 73 extreme heat days, a reliable HVAC system is essential for safety and comfort. Residents should also prepare for 63.5 inches of rain with proper flood insurance and heavy-duty rain gear.
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.