Verdict: Excellent month
Chicago Weather in July
July runs warm in Chicago, with daily highs around 27°C (81°F) and nights near 19°C (66°F). Expect showers on roughly 12 days of the month — rarely trip-ruining, worth planning around. Overall, July is one of the best months of the year to be in Chicago.
Average high
27°C / 81°F
Average low
19°C / 66°F
Rain days
~12
Precipitation
173 mm
What to pack for Chicago in July
- Summer clothes, plus one light layer for air-con and evenings
- High-SPF sunscreen, sunglasses, and a refillable water bottle
- Rain gear is non-negotiable — expect rain on roughly 12 days
- Comfortable walking shoes — every guide on this site assumes you'll use them
July against the rest of the year
Warmest in Chicago: Jul (27°C / 81°F) · Coolest: Jan (1°C / 34°F) · Wettest: Apr (~15 rain days)
1°
-6°
Jan
3°
-6°
Feb
9°
0°
Mar
14°
4°
Apr
19°
10°
May
26°
17°
Jun
27°
19°
Jul
27°
19°
Aug
24°
16°
Sep
17°
9°
Oct
10°
3°
Nov
4°
-2°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)