Weather in Bolingbrook, Illinois for September 2026
Flood Watch - See hour by hour.
So far, September 2026 in Bolingbrook shows a warmer trend than usual by 2.1 °F.
The forecast for the next days in Bolingbrook predicts temperatures to be around 18 °F, close to the historical average.
In general, the average temperature in Bolingbrook at the beginning of September is 26.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19 °F 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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Bolingbrook Weather September
Temperatures trend during September in Bolingbrook
September weather in Bolingbrook day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 28° /17° | 0.3 mm | 5 | |
| Sept. 2 | Sunny | 28° /18° | 0 mm | 6 | |
| Sept. 3 | Sunny | 29° /16° | 14.4 mm | 7 | |
| Sept. 4 | Sunny | 28° /15° | 0 mm | 6 | |
| Sept. 5 | Sunny | 26° /15° | 0 mm | 7 | |
| Sept. 6 |  Patchy rain possible | 22° /11° | 1 mm | 5 | |
| Sept. 7 | Sunny | 22° /10° | 0 mm | 6 | |
| Sept. 8 |  Overcast | 24° /11° | 0 mm | 5 | |
| Sept. 9 |  Partly cloudy | 25° /13° | 11.2 mm | 5 | |
| Sept. 10 |  Mist | 27° /13° | 0 mm | 5 | |
| Sept. 11 | Sunny | 28° /15° | 10.3 mm | 7 | |
| Sept. 12 | Mist | 27° /14° | 0 mm | 7 | |
| Sept. 13 | Mist | 25° /15° | 0.3 mm | 6 | |
| Sept. 14 | Fog | 27° /14° | 0 mm | 6 | |
| Sept. 15 | Mist | 29° /17° | 3.3 mm | 6 | |
| Sept. 16 | Sunny | 28° /16° | 1.7 mm | 6 | |
| Sept. 17 | Light rain shower | 26° /16° | 4.7 mm | 5 | |
| Sept. 18 | Fog | 27° /13° | 0.8 mm | 5 | |
| Sept. 19 |  Heavy rain | 25° /14° | 13.4 mm | 5 | |
| Sept. 20 | Light rain shower | 20° /15° | 73.9 mm | 1.5 | |
| Sept. 21 | Overcast | 16° /14° | 0.1 mm | 1.6 | |
| Sept. 22 | Overcast | 17° /13° | 0.1 mm | 3.9 | |
| Sept. 23 | Overcast | 16° /14° | 0 mm | 1.8 | |
| Sept. 24 | Overcast | 20° /13° | 0.1 mm | 5 | |
| Sept. 25 | Patchy rain possible | 19° /15° | 2.1 mm | 5 | |
| Sept. 26 | Sunny | 22° /15° | 0 mm | 6 | |
| Sept. 27 | Sunny | 22° /16° | 0 mm | 6 | |
| Sept. 28 | Overcast | 18° /9° | 9.3 mm | 4 | |
| Sept. 29 | Sunny | 13° /5° | 0 mm | 4 | |
| Sept. 30 | Overcast | 19° /10° | 0.6 mm | 5 | |
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Bolingbrook in September - FAQ
What are the expected maximum and minimum temperatures in Bolingbrook during September?
How much rainfall should be expected in Bolingbrook during September?
What are the typical wind conditions in Bolingbrook during September?
September rainfall patterns in Bolingbrook
UV exposure in Bolingbrook during September
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Where is Bolingbrook?Get accurate weather forecasts for Bolingbrook, located at latitude 41.699 and longitude -88.068. Stay updated with localized weather information tailored for Bolingbrook.