Will I be cold?
Will I be cold in Jacksonville in May?
Verdict
No — No, comfortable.
Lows stay near 65°F — you won't be reaching for the puffer.
Day vs. night
Day
86°F
Hot
Prioritize shade, hydration, and a brim.
Night
65°F
Comfortable
Comfortable outside without an extra layer.
Why
Jacksonville in May averages highs of 86°F, lows of 65°F, 9 rainy days.
You can pack for the daytime temps and not worry about the evening dip.