Click on a day for an hourly weather forecast
The temperatures in Peoria during September are extremely high, between 28°C and hot as 36°C, drinking water regularly is advisable.
You can expect a few rainy days in Peoria during September, but usually the weather is comfortable in September.
Our weather forecast can give you a great sense of what weather to expect in Peoria in September 2025.
If you’re planning to visit Peoria in the near future, we highly recommend that you review the 14 day weather forecast for Peoria before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 19° / 9° | 1 | 30 | 0 | 37 mm | Good | Peoria in January |
| February | 20° / 11° | 2 | 26 | 0 | 30 mm | Good | Peoria in February |
| March | 24° / 14° | 1 | 30 | 0 | 24 mm | Perfect | Peoria in March |
| April | 28° / 17° | 1 | 29 | 0 | 9 mm | Perfect | Peoria in April |
| May | 33° / 21° | 0 | 31 | 0 | 6 mm | Good | Peoria in May |
| June | 38° / 26° | 0 | 30 | 0 | 6 mm | Bad | Peoria in June |
| July | 39° / 30° | 4 | 27 | 0 | 63 mm | Bad | Peoria in July |
| August | 39° / 30° | 3 | 28 | 0 | 66 mm | Bad | Peoria in August |
| September | 36° / 28° | 2 | 28 | 0 | 53 mm | Ok | Peoria in September |
| October | 31° / 21° | 2 | 29 | 0 | 38 mm | Good | Peoria in October |
| November | 24° / 15° | 1 | 29 | 0 | 22 mm | Perfect | Peoria in November |
| December | 18° / 9° | 2 | 29 | 0 | 34 mm | Good | Peoria in December |