Chicago, Illinois weather in July

Averages from 2021–2025 (155 days of record).

Average high: 81°F
Average low: 67°F
Rainy days: ~12 per month
Total precipitation: 6.4 in
Warmest recorded: 95°F
Coldest recorded: 57°F

Expect July days in Chicago, Illinois to top out around 81°F and cool to about 67°F overnight, with roughly 12 days of measurable rain across the month. In recent years July has ranged from 57°F to 95°F.

Other months

January February March April May June August September October November December

Current Chicago, Illinois forecast → · Historical data by Open-Meteo (ERA5).