Jacksonville · July
Run in the pre-dawn.
Average high is 89°F with a 76°F overnight low. Humidity averages 80% — the limiting factor on most runs. Expect 26 rain days — plan around the radar. Humid heat punishes mid-morning — get out before sunrise for the only truly comfortable window.
Avg high / low
89° / 76°F
Humidity
80%
Rain days
26/mo
Wind
10 mph
What July feels like in Jacksonville
Sunrise
06:36
Mid-month average
Sunset
20:28
Mid-month average
Time-of-day breakdown
Morning
Coolest, driest air of the day. The window before sunrise is the most reliable comfortable hour.
Midday
Heat peaks here. Skip unless you've got shade and pace tolerance.
Evening
Cools off after sunset but still warm. Good for easy efforts; avoid hard intervals if you're chasing pace.
What to wear running in Jacksonville in July
The kit for July in Jacksonville: light, breathable, and moisture-wicking — singlet or short-sleeve only, a water-resistant cap or jacket on standby.
July vs the surrounding months
vs June
+2° avg high
+3 rain days
Jacksonville in June →
July
89°F avg high
26 rain days
Best: pre-dawn
vs August
+1° avg high
-1 rain days
Jacksonville in August →
Frequently Asked Questions
What is the best time of day to run in Jacksonville in July?+
Pre-dawn. Humid heat punishes mid-morning — get out before sunrise for the only truly comfortable window.
What's the average temperature in Jacksonville in July?+
Average high 89°F, average low 76°F.
How does July compare to surrounding months in Jacksonville?+
Compared to June (avg high 87°F), July is warmer. Compared to August (avg high 88°F), July is warmer.
Does it rain often in Jacksonville in July?+
Expect about 26 measurable rain days in July, on average.