Chicago · July
Run in the morning.
Comfortable average high of 79°F, dipping to 66°F at night. Humidity averages 77% — the limiting factor on most runs. Expect 16 rain days — plan around the radar. Humidity rises with the sun — morning runs catch the driest, coolest window.
Avg high / low
79° / 66°F
Humidity
77%
Rain days
16/mo
Wind
13 mph
What July feels like in Chicago
Sunrise
05:30
Mid-month average
Sunset
20:22
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 Chicago in July
The kit for July in Chicago: shorts and a short-sleeve are the standard kit, a water-resistant cap or jacket on standby.
July vs the surrounding months
vs June
+4° avg high
0 rain days
Chicago in June →
July
79°F avg high
16 rain days
Best: morning
vs August
0° avg high
-1 rain days
Chicago in August →
Frequently Asked Questions
What is the best time of day to run in Chicago in July?+
Morning. Humidity rises with the sun — morning runs catch the driest, coolest window.
What's the average temperature in Chicago in July?+
Average high 79°F, average low 66°F.
How does July compare to surrounding months in Chicago?+
Compared to June (avg high 76°F), July is warmer. Compared to August (avg high 79°F), July is warmer.
Does it rain often in Chicago in July?+
Expect about 16 measurable rain days in July, on average.