Chicago Weather in July
July in Chicago sees daytime temperatures around 29°C (84°F) and lows of 19°C (66°F) at night. With around 115 mm (4.5 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Chicago in July
You can expect rain on around 11 days based on historical patterns, with 115 mm (4.5 in) average for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Chicago in July
Daytime temperatures in Chicago reach 29°C (84°F) in July, dropping to 19°C (66°F) at night. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With lows of 19°C (66°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest. It's the warmest month of the year on average, so summer clothing is the way to go.
Sunshine in Chicago in July
Enjoy a sunny month with about 319 hours of sunshine, the clear skies make Chicago even more beautiful.
Wind Speed in Chicago in July
July sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.If you prefer dry days with pleasant temperatures, September typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Chicago's climate page.
Chicago Temperature in July
Min Temperature
19°C (66°F)
Max Temperature
29°C (84°F)
Chance of Rain
38%
Precipitation
115 mm (4.5 in)
Rainy days
11 days
Humidity
68%
Windspeed
4 m/s (8 knots)
Sunshine
319 hours
Percentage Sunshine
69%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Chicago typically stay consistent throughout July, with daily highs averaging around 29°C (84°F). Nights are pleasant, with lows typically ranging from 17°C (63°F) to 20°C (68°F).
Average temperatures in July
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in July
Historical weather for Chicago in July
Browse day-by-day weather records for Chicago spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Chicago historical weather extremes in July
Based on 49 years of weather observations in Chicago between 1976 and 2025, these are the recorded extremes.
- On July 13, 1995, temperatures climbed to 39°C (102°F), marking the warmest July day on record.
- On July 27, 2013, Chicago saw its coldest July day with temperatures maxing out at 18°C (64°F).
- The lowest overnight temperature recorded in July was 6°C (43°F) (July 6, 1979).
Best Places in the United States of America in July
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in July →
perfect weather
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What to Wear in Chicago in July
Warm weather calls for comfortable, breathable clothing in July. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Chicago in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Chicago's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Chicago climate overview or explore weather in the United States of America.
