Chicago
August
Weather in Chicago for August 2025
Your guide to Chicago weather in August - trends and predictions
In general, the average temperature in Chicago at the beginning of August is 26.9 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 27.6 °F by the end of August.
Chicago in August brings notable rainfall, with an average of 19 rainy days and a total precipitation of 78.8 mm.
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Temperatures
Rain 🌧️
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12
Dry days
19
Rainy days
0
Snow days
26°/20°
Temperatures
18 km/h
Avg max wind
69 %
Avg humidity
Chicago in August average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  28° | 2  26° | 3 28° | ||||
| 4  26° | 5 27° | 6 26° | 7 27° | 8 28° | 9 25° | 10 27° |
| 11 27° | 12 26° | 13 26° | 14  25° | 15  24° | 16 26° | 17 25° |
| 18 25° | 19 27° | 20 26° | 21 24° | 22 26° | 23 29° | 24  30° |
| 25 29° | 26 27° | 27 29° | 28 28° | 29 28° | 30 26° | 31 26° |
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Temperatures trend during August in Chicago
See the weather trend as well as the moving average line
August weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 | Moderate rain at times | 28° /20° | 3.5 mm | 6 | |
| Aug. 2 | Cloudy | 26° /20° | 0.8 mm | 6 | |
| Aug. 3 | Cloudy | 28° /20° | 2.4 mm | 6 | |
| Aug. 4 | Patchy rain possible | 26° /20° | 0.3 mm | 6 | |
| Aug. 5 | Patchy rain possible | 27° /20° | 2 mm | 6 | |
| Aug. 6 | Moderate or heavy rain shower | 26° /20° | 7 mm | 6 | |
| Aug. 7 | Moderate rain at times | 27° /20° | 4.4 mm | 6 | |
| Aug. 8 | Moderate or heavy rain shower | 28° /19° | 3.6 mm | 6 | |
| Aug. 9 | Moderate or heavy rain shower | 25° /18° | 4.3 mm | 6 | |
| Aug. 10 | Patchy rain possible | 27° /17° | 0.8 mm | 7 | |
| Aug. 11 | Patchy rain possible | 27° /19° | 1.5 mm | 6 | |
| Aug. 12 | Cloudy | 26° /19° | 2.3 mm | 6 | |
| Aug. 13 | Patchy rain possible | 26° /19° | 0.9 mm | 6 | |
| Aug. 14 | Sunny | 25° /19° | 6.6 mm | 6 | |
| Aug. 15 | Partly cloudy | 24° /18° | 3.4 mm | 5 | |
| Aug. 16 | Sunny | 26° /18° | 4 mm | 6 | |
| Aug. 17 | Patchy rain possible | 25° /19° | 5.6 mm | 6 | |
| Aug. 18 | Patchy rain possible | 25° /19° | 0.4 mm | 6 | |
| Aug. 19 | Patchy rain possible | 27° /19° | 0.2 mm | 6 | |
| Aug. 20 | Patchy rain possible | 26° /20° | 4 mm | 7 | |
| Aug. 21 | Moderate or heavy rain shower | 24° /19° | 1 mm | 6 | |
| Aug. 22 | Sunny | 26° /19° | 0.2 mm | 6 | |
| Aug. 23 | Sunny | 29° /19° | 0 mm | 7 | |
| Aug. 24 | Heavy rain at times | 30° /20° | 0.3 mm | 7 | |
| Aug. 25 | Patchy rain possible | 29° /21° | 5.1 mm | 6 | |
| Aug. 26 | Cloudy | 27° /20° | 0.8 mm | 6 | |
| Aug. 27 | Patchy rain possible | 29° /20° | 0 mm | 7 | |
| Aug. 28 | Moderate or heavy rain shower | 28° /20° | 5.9 mm | 7 | |
| Aug. 29 | Moderate or heavy rain shower | 28° /20° | 3.1 mm | 6 | |
| Aug. 30 | Cloudy | 26° /20° | 4.2 mm | 6 | |
| Aug. 31 | Partly cloudy | 26° /18° | 0.2 mm | 7 | |
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Important Notice
Our weather forecast for Chicago in August 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 Chicago forecast closer to your planned date for the most up-to-date weather information.
Chicago in August - FAQ
What are the expected maximum and minimum temperatures in Chicago during August?
During August, 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 Chicago during August?
Moderate rainfall is anticipated in Chicago during August, with a total of 78.8 mm spread over approximately 19 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Chicago during August?
The average wind speed in Chicago during August is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Chicago
Explore the daily rainfall trends and prepare for Chicagos August weather 💧
UV exposure in Chicago during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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