Illinois (Chicago)
July
Weather in Illinois for July 2025
Your guide to Illinois weather in July - trends and predictions
Beach Hazards Statement - See hour by hour.
So far, July 2025 in Illinois is slightly warmer than the historical average by 1.4 °F.
The forecast for the coming days of July 2025 predicts a temperature of 27.1 °F , which is warmer than usual.
In general, the average temperature in Illinois at the beginning of July is 26.3 °F. As the month progressed, temperatures tended to slightly increase, reaching an average of 26.7 °F by the end of July.
Illinois in July brings notable rainfall, with an average of 19 rainy days and a total precipitation of 91.4 mm.
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Temperatures
Rain 🌧️
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12
Dry days
19
Rainy days
0
Snow days
26°/19°
Temperatures
17 km/h
Avg max wind
73 %
Avg humidity
Illinois Weather July
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What’s the Weather Like in Illinois This July?
Discover the average temperatures and weather trends across Illinois’s cities this July.
Temperatures trend during July in Illinois
See the weather trend as well as the moving average line
July weather in Illinois day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jul. 1 |  Patchy rain possible | 24° /17° | 15.5 mm | 6 | |
| Jul. 2 |  Sunny | 24° /18° | 6.8 mm | 6 | |
| Jul. 3 |  Partly cloudy | 27° /18° | 1.5 mm | 6 | |
| Jul. 4 | Light rain shower | 29° /20° | 1.4 mm | 6 | |
| Jul. 5 |  Moderate or heavy rain shower | 29° /21° | 5 mm | 6 | |
| Jul. 6 | Patchy rain possible | 25° /18° | 20.8 mm | 5 | |
| Jul. 7 |  Overcast | 26° /18° | 1.1 mm | 6 | |
| Jul. 8 | Moderate or heavy rain shower | 24° /18° | 5 mm | 5 | |
| Jul. 9 | Partly cloudy | 24° /18° | 2.3 mm | 6 | |
| Jul. 10 | Moderate rain at times | 25° /18° | 1.7 mm | 6 | |
| Jul. 11 | Moderate or heavy rain shower | 27° /18° | 12.5 mm | 6 | |
| Jul. 12 | Moderate rain at times | 26° /19° | 4.1 mm | 6 | |
| Jul. 13 | Overcast | 25° /19° | 1.2 mm | 5 | |
| Jul. 14 | Overcast | 29° /19° | 0.7 mm | 6 | |
| Jul. 15 | Moderate or heavy rain shower | 26° /20° | 11.4 mm | 6 | |
| Jul. 16 | Overcast | 27° /20° | 8.6 mm | 6 | |
| Jul. 17 | Overcast | 24° /18° | 1.2 mm | 5 | |
| Jul. 18 | Overcast | 24° /18° | 0 mm | 6 | |
| Jul. 19 | Partly cloudy | 27° /19° | 0.8 mm | 7 | |
| Jul. 20 | Partly cloudy | 27° /20° | 0.3 mm | 6 | |
| Jul. 21 | Patchy rain possible | 26° /19° | 1.5 mm | 6 | |
| Jul. 22 | Patchy rain possible | 28° /19° | 0.2 mm | 7 | |
| Jul. 23 |  Heavy rain at times | 30° /20° | 3.2 mm | 6 | |
| Jul. 24 | Moderate rain at times | 28° /22° | 2.8 mm | 6 | |
| Jul. 25 | Partly cloudy | 26° /20° | 0 mm | 6 | |
| Jul. 26 | Sunny | 28° /20° | 0.6 mm | 7 | |
| Jul. 27 | Sunny | 29° /21° | 0.7 mm | 7 | |
| Jul. 28 | Patchy rain possible | 28° /21° | 5.1 mm | 6 | |
| Jul. 29 |  Cloudy | 28° /20° | 15.8 mm | 6 | |
| Jul. 30 | Patchy rain possible | 25° /23° | 2 mm | 1.3 | |
| Jul. 31 |  Heavy rain | 23° /18° | 64.1 mm | 1.8 | |
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Important Notice
Our weather forecast for Illinois in July is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Illinois forecast closer to your planned date for the most up-to-date weather information.
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Illinois in July - FAQ
What are the expected maximum and minimum temperatures in Illinois during July?
During July, expect a variety of temperatures with highs around 26° and lows near 19°, suitable for diverse activities and preferences.
How much rainfall should be expected in Illinois during July?
Moderate rainfall is anticipated in Illinois during July, with a total of 91.4 mm spread over approximately 19 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Illinois during July?
The average wind speed in Illinois during July is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
July rainfall patterns in Illinois
Explore the daily rainfall trends and prepare for Illinoiss July weather 💧
UV exposure in Illinois during July
Stay informed about UV levels for safe outdoor activities throughout the month of July ☀️
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