What to expect in Chicago in July
July is a strong choice for Chicago: 29° / 18°, with the biggest crowds of the year and premium prices.
Chicago weather in July
Typical conditions in Chicago during July, based on long-run climate normals rather than any single year. Treat it as a planning guide, not a forecast.
| Average high | 29°C 84°F |
|---|---|
| Average low | 18°C 64°F |
| Rainfall | Moderate 51/100 |
| Total rainfall | 94 mm3.7 in |
| Rainy days | 10 |
| Daylight | 14 h 55 min |
| How it feels | Warm and comfortable |
Average highs sit around 29°C with lows near 18°C. Rainfall is moderate; the odd shower is likely.
Crowds & demand
Crowd levels are High for Chicago — the biggest crowds of the year.
Prices & value
This month counts as high season: premium prices.
What to pack
Light layers for 29°C days and something with sleeves for evenings, which cool to around 18°C.
What it costs
This is peak pricing for Chicago. Expect to pay a premium on flights and accommodation, and to book considerably further ahead than usual.
Who this month suits
- Travellers who want the most reliable weather
- Visitors who want to catch a festival
- Families tied to school holidays
Events & what’s on
Look out for Lollapalooza while you’re there.
- Lollapalooza — A four-day music festival in Grant Park that draws an estimated 400,000 people each summer.
Chicago in July compared with nearby months
If your dates are flexible by a few weeks, this is what shifting them actually buys you.
| Month | Temp | Crowds | Price | Score |
|---|---|---|---|---|
| May | 21° / 9° | Moderate | $$ | 58 |
| June | 27° / 15° | High | $$$ | 48 |
| July · This month | 29° / 18° | High | $$$ | 40 |
| August | 28° / 17° | High | $$$ | 42 |
| September | 24° / 12° | High | $$ | 57 |
These months score higher for Chicago on the same blend of weather, crowds and price. Same destination, better odds.
Or go somewhere else in July
If the destination is negotiable but the month is not, these places are at their best in July.
Figures are climate normals and modelled estimates — a planning guide, not a forecast. We separate fact, estimate and recommendation. Updated October 2026
