Cleveland · September
Run in the morning.
Comfortable average high of 73°F, dipping to 61°F at night. Humidity averages 76% — the limiting factor on most runs. Humidity rises with the sun — morning runs catch the driest, coolest window.
Avg high / low
73° / 61°F
Humidity
76%
Rain days
14/mo
Wind
13 mph
What September feels like in Cleveland
Sunrise
07:08
Mid-month average
Sunset
19:35
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 September
The kit for September in Cleveland: shorts and a short-sleeve are the standard kit, a water-resistant cap or jacket on standby.
September vs the surrounding months
vs August
-5° avg high
-4 rain days
Cleveland in August →
September
73°F avg high
14 rain days
Best: morning
vs October
+11° avg high
-3 rain days
Cleveland in October →
Frequently Asked Questions
What is the best time of day to run in Cleveland in September?+
Morning. Humidity rises with the sun — morning runs catch the driest, coolest window.
What's the average temperature in Cleveland in September?+
Average high 73°F, average low 61°F.
How does September compare to surrounding months in Cleveland?+
Compared to August (avg high 78°F), September is cooler. Compared to October (avg high 63°F), September is warmer.
Does it rain often in Cleveland in September?+
Expect about 14 measurable rain days in September, on average.