Illinois (Chicago)
July
Weather in Illinois for July 2027
Your guide to Illinois weather in July - trends and predictions
In general, the average temperature in Illinois at the beginning of July is 25.9 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 26.6 °C by the end of July.
The climate of Illinois in July is notably wet, with an average of 12 rainy days, and a total of 149.3 mm of precipitation.
Is July a good time to visit Illinois? check out the best time to travel to Illinois page.
✨ Is July a good time to visit Illinois? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
19
Dry days
12
Rainy days
0
Snow days
26°/20°
Temperatures
17 km/h
Avg max wind
75 %
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 |  Moderate rain | 25° /18° | 12.9 mm | 7 | |
| Jul. 2 |  Moderate or heavy rain shower | 25° /19° | 6.4 mm | 7 | |
| Jul. 3 |  Light rain | 27° /19° | 4.2 mm | 7 | |
| Jul. 4 | Light rain | 28° /21° | 5.6 mm | 7 | |
| Jul. 5 | Light rain | 28° /21° | 4.4 mm | 7 | |
| Jul. 6 | Moderate rain | 24° /19° | 17.3 mm | 7 | |
| Jul. 7 |  Patchy rain possible | 26° /19° | 1 mm | 7 | |
| Jul. 8 | Light rain | 25° /19° | 4.2 mm | 7 | |
| Jul. 9 | Light rain | 24° /19° | 2.5 mm | 7 | |
| Jul. 10 | Patchy rain possible | 25° /19° | 1.5 mm | 7 | |
| Jul. 11 | Moderate rain | 26° /19° | 10.4 mm | 7 | |
| Jul. 12 | Light rain | 26° /20° | 3.5 mm | 7 | |
| Jul. 13 | Patchy rain possible | 25° /19° | 1 mm | 6 | |
| Jul. 14 |  Overcast | 29° /20° | 0.6 mm | 7 | |
| Jul. 15 | Moderate or heavy rain shower | 27° /21° | 9.5 mm | 7 | |
| Jul. 16 | Light rain | 27° /21° | 7.1 mm | 7 | |
| Jul. 17 | Light rain | 24° /20° | 4.2 mm | 6 | |
| Jul. 18 | Patchy rain possible | 25° /19° | 1.4 mm | 7 | |
| Jul. 19 |  Partly cloudy | 27° /20° | 0.7 mm | 8 | |
| Jul. 20 | Partly cloudy | 27° /20° | 0.3 mm | 7 | |
| Jul. 21 | Patchy rain possible | 26° /19° | 2.3 mm | 6 | |
| Jul. 22 | Patchy rain possible | 27° /19° | 0.4 mm | 7 | |
| Jul. 23 | Light rain | 29° /20° | 2.7 mm | 7 | |
| Jul. 24 | Patchy rain possible | 28° /22° | 2.3 mm | 7 | |
| Jul. 25 | Partly cloudy | 26° /20° | 0 mm | 7 | |
| Jul. 26 |  Sunny | 27° /20° | 0.5 mm | 7 | |
| Jul. 27 | Moderate rain | 28° /21° | 11.2 mm | 7 | |
| Jul. 28 | Light rain | 27° /21° | 4.3 mm | 7 | |
| Jul. 29 | Moderate rain | 27° /20° | 13.2 mm | 7 | |
| Jul. 30 | Sunny | 26° /20° | 0.5 mm | 7 | |
| Jul. 31 | Moderate rain | 27° /20° | 13.3 mm | 7 | |
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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 20°, suitable for diverse activities and preferences.
How much rainfall should be expected in Illinois during July?
Significant rainfall exceeding 149.3 mm is expected in Illinois during July, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.
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 💧
Typically, Illinois has 12 rainy days in July with a total of 149.3 mm of rainfall.
UV exposure in Illinois during July
Stay informed about UV levels for safe outdoor activities throughout the month of July ☀️
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