Jacksonville, Florida weather in May

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

Average high: 85°F
Average low: 68°F
Rainy days: ~10 per month
Total precipitation: 3.2 in
Warmest recorded: 97°F
Coldest recorded: 54°F

Expect May days in Jacksonville, Florida to top out around 85°F and cool to about 68°F overnight, with roughly 10 days of measurable rain across the month. In recent years May has ranged from 54°F to 97°F.

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