Click on a day for an hourly weather forecast
The temperatures in Tempe during September are extremely high, between 27°C and hot as 37°C, drinking water regularly is advisable.
You can expect a few rainy days in Tempe 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 Tempe in September 2025.
If you’re planning to visit Tempe in the near future, we highly recommend that you review the 14 day weather forecast for Tempe before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 19° / 9° | 2 | 29 | 0 | 40 mm | Good | Tempe in January |
| February | 21° / 11° | 2 | 26 | 0 | 36 mm | Good | Tempe in February |
| March | 25° / 14° | 1 | 30 | 0 | 27 mm | Perfect | Tempe in March |
| April | 29° / 17° | 1 | 29 | 0 | 9 mm | Good | Tempe in April |
| May | 34° / 21° | 0 | 31 | 0 | 5 mm | Ok | Tempe in May |
| June | 40° / 26° | 0 | 30 | 0 | 5 mm | Bad | Tempe in June |
| July | 40° / 29° | 4 | 27 | 0 | 65 mm | Bad | Tempe in July |
| August | 40° / 30° | 3 | 28 | 0 | 56 mm | Bad | Tempe in August |
| September | 37° / 27° | 2 | 28 | 0 | 54 mm | Ok | Tempe in September |
| October | 31° / 21° | 2 | 29 | 0 | 31 mm | Good | Tempe in October |
| November | 25° / 15° | 1 | 29 | 0 | 26 mm | Perfect | Tempe in November |
| December | 18° / 10° | 2 | 29 | 0 | 44 mm | Good | Tempe in December |