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 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 24.4 °F by the end of September.
Bolingbrook experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 78.9 mm.
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Temperatures
Rain 🌧️
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22
Dry days
8
Rainy days
0
Snow days
25°/14°
Temperatures
15 km/h
Avg max wind
63 %
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?
Moderate rainfall is anticipated in Bolingbrook during September, with a total of 78.9 mm spread over approximately 8 days. Considering plans for rainy days is advisable.
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 💧
UV exposure in Bolingbrook during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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