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The weather in Perris in September is hot. The average temperatures are between 18°C and 32°C. Usually the days in September are hot while the nights are a bit cooler.
You can expect a few rainy days in Perris 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 Perris in September 2025.
If you’re planning to visit Perris in the near future, we highly recommend that you review the 14 day weather forecast for Perris before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 18° / 5° | 4 | 27 | 0 | 63 mm | Good | Perris in January |
| February | 18° / 5° | 4 | 24 | 0 | 69 mm | Good | Perris in February |
| March | 20° / 7° | 4 | 27 | 0 | 51 mm | Good | Perris in March |
| April | 23° / 9° | 2 | 28 | 0 | 28 mm | Perfect | Perris in April |
| May | 25° / 11° | 2 | 29 | 0 | 14 mm | Perfect | Perris in May |
| June | 29° / 15° | 0 | 30 | 0 | 1 mm | Good | Perris in June |
| July | 32° / 18° | 1 | 30 | 0 | 6 mm | Good | Perris in July |
| August | 33° / 19° | 1 | 30 | 0 | 4 mm | Good | Perris in August |
| September | 32° / 18° | 1 | 29 | 0 | 8 mm | Good | Perris in September |
| October | 27° / 13° | 2 | 29 | 0 | 17 mm | Perfect | Perris in October |
| November | 22° / 8° | 2 | 28 | 0 | 35 mm | Good | Perris in November |
| December | 17° / 5° | 4 | 27 | 0 | 89 mm | Good | Perris in December |