Click on a day for an hourly weather forecast
The temperatures in Poway in September are comfortable with low of 19°C and and high up to 29°C.
You can expect a few rainy days in Poway 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 Poway in September 2025.
If you’re planning to visit Poway in the near future, we highly recommend that you review the 14 day weather forecast for Poway before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 20° / 10° | 2 | 29 | 0 | 56 mm | Good | Poway in January |
| February | 20° / 9° | 2 | 26 | 0 | 62 mm | Good | Poway in February |
| March | 20° / 10° | 2 | 29 | 0 | 37 mm | Good | Poway in March |
| April | 22° / 11° | 1 | 29 | 0 | 16 mm | Good | Poway in April |
| May | 23° / 12° | 1 | 30 | 0 | 14 mm | Perfect | Poway in May |
| June | 26° / 15° | 0 | 30 | 0 | 3 mm | Perfect | Poway in June |
| July | 29° / 18° | 1 | 30 | 0 | 23 mm | Good | Poway in July |
| August | 30° / 20° | 1 | 30 | 0 | 13 mm | Good | Poway in August |
| September | 29° / 19° | 1 | 29 | 0 | 14 mm | Good | Poway in September |
| October | 26° / 16° | 0 | 31 | 0 | 11 mm | Perfect | Poway in October |
| November | 23° / 13° | 1 | 29 | 0 | 30 mm | Perfect | Poway in November |
| December | 19° / 9° | 2 | 29 | 0 | 59 mm | Good | Poway in December |