Bolingbrook (IL)
September
Weather in Bolingbrook, Illinois for September 2026
Your guide to Bolingbrook weather in September - trends and predictions
In general, the average temperature in Bolingbrook at the beginning of September is 22.6 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 24.4 °C by the end of September.
The climate of Bolingbrook in September is notably wet, with an average of 11 rainy days, and a total of 115.8 mm of precipitation.
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Temperatures
Rain 🌧️
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19
Dry days
11
Rainy days
0
Snow days
25°/14°
Temperatures
15 km/h
Avg max wind
68 %
Avg humidity
Bolingbrook Weather September
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Temperatures trend during September in Bolingbrook
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September weather in Bolingbrook day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 24° /14° | 0 mm | 6 | |
| Sept. 2 | Sunny | 24° /15° | 0 mm | 6 | |
| Sept. 3 | Sunny | 25° /12° | 21.5 mm | 6 | |
| Sept. 4 | Sunny | 23° /10° | 0 mm | 6 | |
| Sept. 5 | Sunny | 25° /13° | 0 mm | 6 | |
| Sept. 6 |  Patchy rain possible | 19° /8° | 1.4 mm | 5 | |
| Sept. 7 | Sunny | 18° /7° | 0 mm | 5 | |
| Sept. 8 |  Overcast | 23° /9° | 0 mm | 5 | |
| Sept. 9 |  Partly cloudy | 24° /11° | 0 mm | 6 | |
| Sept. 10 |  Mist | 27° /12° | 0 mm | 6 | |
| Sept. 11 | Light rain shower | 28° /16° | 13.7 mm | 6 | |
| Sept. 12 | Mist | 27° /14° | 0 mm | 6 | |
| Sept. 13 | Mist | 26° /16° | 0 mm | 6 | |
| Sept. 14 | Fog | 29° /15° | 0 mm | 7 | |
| Sept. 15 | Mist | 29° /17° | 0 mm | 7 | |
| Sept. 16 | Sunny | 29° /15° | 0.3 mm | 7 | |
| Sept. 17 | Light rain shower | 26° /15° | 1.8 mm | 6 | |
| Sept. 18 | Fog | 28° /13° | 0 mm | 6 | |
| Sept. 19 |  Heavy rain | 26° /14° | 6.6 mm | 6 | |
| Sept. 20 |  Thundery outbreaks possible | 28° /15° | 7.7 mm | 6 | |
| Sept. 21 | Patchy rain possible | 27° /16° | 0 mm | 6 | |
| Sept. 22 | Fog | 23° /15° | 16.2 mm | 5 | |
| Sept. 23 | Fog | 24° /15° | 28.1 mm | 5 | |
| Sept. 24 | Overcast | 22° /13° | 0 mm | 5 | |
| Sept. 25 | Fog | 25° /15° | 0.1 mm | 6 | |
| Sept. 26 | Fog | 26° /12° | 9.9 mm | 6 | |
| Sept. 27 | Light rain shower | 24° /14° | 6.8 mm | 6 | |
| Sept. 28 | Fog | 23° /15° | 0 mm | 5 | |
| Sept. 29 | Fog | 25° /15° | 1.5 mm | 6 | |
| Sept. 30 | Fog | 26° /15° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Bolingbrook in September 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 Bolingbrook forecast closer to your planned date for the most up-to-date weather information.
Change Month
Bolingbrook in September - FAQ
What are the expected maximum and minimum temperatures in Bolingbrook during September?
Enjoy moderate daytime temperatures of up to 25° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Bolingbrook during September?
Significant rainfall exceeding 115.8 mm is expected in Bolingbrook during September, occurring over more than 11 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Bolingbrook during September?
The average wind speed in Bolingbrook during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Bolingbrook
Explore the daily rainfall trends and prepare for Bolingbrooks September weather 💧
Typically, Bolingbrook has 11 rainy days in September with a total of 115.8 mm of rainfall.
UV exposure in Bolingbrook during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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