Jacksonville, Florida weather in December

Averages from 2021–2025 (155 days of record).

Average high: 67°F
Average low: 52°F
Rainy days: ~5 per month
Total precipitation: 1.6 in
Warmest recorded: 80°F
Coldest recorded: 24°F

Expect December days in Jacksonville, Florida to top out around 67°F and cool to about 52°F overnight, with roughly 5 days of measurable rain across the month. In recent years December has ranged from 24°F to 80°F.

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Current Jacksonville, Florida forecast → · Historical data by Open-Meteo (ERA5).