Washington D.C. · July
Run in the pre-dawn.
Average high is 88°F with a 70°F overnight low. Expect 19 rain days — plan around the radar. Humid heat punishes mid-morning — get out before sunrise for the only truly comfortable window.
Avg high / low
88° / 70°F
Humidity
72%
Rain days
19/mo
Wind
9 mph
What July feels like in Washington D.C.
Sunrise
05:56
Mid-month average
Sunset
20:31
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 Washington D.C. in July
The kit for July in Washington D.C.: 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
+4° avg high
+3 rain days
Washington D.C. in June →
July
88°F avg high
19 rain days
Best: pre-dawn
vs August
+3° avg high
+2 rain days
Washington D.C. in August →
Frequently Asked Questions
What is the best time of day to run in Washington D.C. 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 Washington D.C. in July?+
Average high 88°F, average low 70°F.
How does July compare to surrounding months in Washington D.C.?+
Compared to June (avg high 83°F), July is warmer. Compared to August (avg high 85°F), July is warmer.
Does it rain often in Washington D.C. in July?+
Expect about 19 measurable rain days in July, on average.