Weather in Peoria Heights, Illinois for September 2026
So far, September 2026 in Peoria Heights is slightly warmer than the historical average by 1.1 °F.
Expect cooler weather in the next days in Peoria Heights with the forecast suggesting a temperature of 19.5 °F, lower than the historical average.
In general, the average temperature in Peoria Heights at the beginning of September is 28.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.3 °F by the end of September.
Peoria Heights experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 112.9 mm.
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Peoria Heights Weather September
Temperatures trend during September in Peoria Heights
September weather in Peoria Heights day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 31° /16° | 0 mm | 7 | |
| Sept. 2 | Sunny | 30° /15° | 0 mm | 7 | |
| Sept. 3 |  Partly cloudy | 31° /15° | 33.2 mm | 7 | |
| Sept. 4 | Sunny | 30° /14° | 0 mm | 7 | |
| Sept. 5 |  Mist | 30° /17° | 0 mm | 7 | |
| Sept. 6 | Partly cloudy | 25° /13° | 0 mm | 6 | |
| Sept. 7 | Sunny | 24° /8° | 0 mm | 6 | |
| Sept. 8 | Sunny | 27° /9° | 0 mm | 6 | |
| Sept. 9 | Sunny | 26° /13° | 18.3 mm | 5 | |
| Sept. 10 | Sunny | 28° /14° | 31.6 mm | 5 | |
| Sept. 11 | Sunny | 31° /15° | 0.1 mm | 7 | |
| Sept. 12 | Sunny | 31° /15° | 0.1 mm | 7 | |
| Sept. 13 |  Overcast | 28° /17° | 0.4 mm | 6 | |
| Sept. 14 |  Patchy rain possible | 31° /16° | 0 mm | 7 | |
| Sept. 15 |  Cloudy | 32° /19° | 1 mm | 5 | |
| Sept. 16 | Sunny | 31° /18° | 4.7 mm | 6 | |
| Sept. 17 | Sunny | 30° /15° | 5.7 mm | 6 | |
| Sept. 18 | Sunny | 29° /15° | 6.1 mm | 6 | |
| Sept. 19 | Partly cloudy | 28° /16° | 1.8 mm | 5 | |
| Sept. 20 | Patchy rain possible | 23° /16° | 3.8 mm | 4.1 | |
| Sept. 21 | Overcast | 16° /14° | 1 mm | 0.8 | |
| Sept. 22 | Overcast | 17° /12° | 0.1 mm | 2.6 | |
| Sept. 23 | Sunny | 21° /11° | 0.2 mm | 6 | |
| Sept. 24 | Overcast | 21° /12° | 0 mm | 5.7 | |
| Sept. 25 | Overcast | 19° /14° | 0 mm | 4 | |
| Sept. 26 | Overcast | 16° /14° | 0 mm | 5 | |
| Sept. 27 | Overcast | 23° /13° | 0 mm | 6 | |
| Sept. 28 | Sunny | 24° /12° | 0 mm | 6 | |
| Sept. 29 | Sunny | 26° /13° | 0 mm | 6 | |
| Sept. 30 | Patchy rain possible | 20° /13° | 2.6 mm | 5 | |
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Peoria Heights in September - FAQ
What are the expected maximum and minimum temperatures in Peoria Heights during September?
How much rainfall should be expected in Peoria Heights during September?
What are the typical wind conditions in Peoria Heights during September?
September rainfall patterns in Peoria Heights
UV exposure in Peoria Heights during September
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Where is Peoria Heights?Get accurate weather forecasts for Peoria Heights, located at latitude 40.747 and longitude -89.574. Stay updated with localized weather information tailored for Peoria Heights.