Cleveland · August
Run in the morning.
Comfortable average high of 78°F, dipping to 66°F at night. Humidity averages 77% — the limiting factor on most runs. Expect 18 rain days — plan around the radar. Humidity rises with the sun — morning runs catch the driest, coolest window.
Avg high / low
78° / 66°F
Humidity
77%
Rain days
18/mo
Wind
12 mph
What August feels like in Cleveland
Sunrise
06:36
Mid-month average
Sunset
20:24
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
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in Cleveland in August
The kit for August in Cleveland: shorts and a short-sleeve are the standard kit, a water-resistant cap or jacket on standby.
August vs the surrounding months
vs July
-1° avg high
0 rain days
Cleveland in July →
August
78°F avg high
18 rain days
Best: morning
vs September
+5° avg high
+4 rain days
Cleveland in September →
Frequently Asked Questions
What is the best time of day to run in Cleveland in August?+
Morning. Humidity rises with the sun — morning runs catch the driest, coolest window.
What's the average temperature in Cleveland in August?+
Average high 78°F, average low 66°F.
How does August compare to surrounding months in Cleveland?+
Compared to July (avg high 79°F), August is cooler. Compared to September (avg high 73°F), August is warmer.
Does it rain often in Cleveland in August?+
Expect about 18 measurable rain days in August, on average.