Climate change in Jefferson Davis County, Mississippi
Since 1979, Jefferson Davis County, Mississippi has warmed 3.0°F, with 22 more days above 90°F, 44 more nights above 70°F and 4% less precipitation a year. Its climate in 1996–2025 is most like East Feliciana Parish, LA's was in 1951–1980.
- Average temperature: +3.0°F
- Summer highs (Jun–Aug): +1.5°F
- Winter lows (Dec–Feb): +4.3°F
- Precipitation: −4%
- Wettest day of the year: −14%
- Longest dry spell: +3 days
- Days above 90°F: +22 days
- Nights above 70°F: +44 days
- Freezing nights: −17 days
- Frost-free season: +20 days
- Muggy days: +17 days
- Summer heat index (Jun–Aug): +1.9°F
- Extreme fire-weather days: +19 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.