Weather in Chicago in July 2025
- July is usually the hottest month of the year in Chicago;
Average weather
Average temperature in Chicago in July
The expected average maximum temperature in July is +28°C with a maximum of +34°C and a minimum of +16°C.
The average maximum temperature goes down 11% by the end of the month, compared with the beginning of the month, from +29°C to +27°C.
Is Chicago warm or cold in July?
Chicago is typically warm in July.
Maximum temperatures go up compared to the previous month from +25°C to +28°C. The minimum temperature also goes up from +18°C to +21°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
July is the hottest month in Chicago, here is the comparison with other months:
Water temperature in Chicago in July
Water in Chicago in July is Comfortable. It varies from +18°C to +25°C, with an average of +22°C. The air temperature averaging +28°C is higher than the water temperature.
The water temperature in July is one of the warmest of the entire year:
Can you swim in Chicago in July?
Climate in Chicago in July
| June | July | August | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +25°C | +28°C | +27°C | ||||
| Min. temperature | ||||||
| +6°C | +13°C | +11°C | ||||
| Max. temperature | ||||||
| +38°C | +40°C | +38°C | ||||
| Rainfall | ||||||
| 91 mm | 94 mm | 90 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Avg. water temperature | ||||||
| +14°C | +22°C | +23°C | ||||
| Humidity | ||||||
| 65% | 66% | 69% | ||||
| Air pressure | ||||||
| 1013 HPa | 1014 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 4 | 4 | 5 | ||||
| Cloudy days | ||||||
| 10 | 10 | 10 | ||||
| Rainy days | ||||||
| 11 | 11 | 12 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
July weather is still as good as in June. It’s getting warmer as July arrives. The average maximum temperature goes up from +25°C to +28°C during the day. Prepare for more rain. Average rainfall goes from 91 mm to 94 mm. Humidity rises from 65% to 66%. The average wind speed doesn’t change much during July, staying around 3 m/s. The amount of sunny days stay about the same, averaging 4 sunny days during the month.
August brings much the same weather, it remains good.
Wind
The average wind speed is 3 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Chicago is gradually increasing during July, going from 2 m/s to 2 m/s over the course of the month.
Rain
How was the weather last July in Chicago?
Climate Change over Years
The climate in Chicago in July has not changed much over the last 43 years.
The average temperature was the lowest in 1979 (+12°C) and the highest in 2012 (+17°C). The driest year was 2005 with only 501 mm of rainfall, and the wettest year was 2023 with 1535 mm.
FAQ
Is July a good time to visit Chicago?
Can you sunbathe in Chicago in July?
Can you swim in Chicago in July?
Is Chicago rainy in July?
Is it sunny in Chicago in July?
Other cities in USA
Monthly weather in Chicago
Source of the data
For this page, we’ve looked at the typical weather in Chicago, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.