Click on a day for an hourly weather forecast
The temperatures in Surprise 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 Surprise 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 Surprise in September 2025.
If you’re planning to visit Surprise in the near future, we highly recommend that you review the 14 day weather forecast for Surprise before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 19° / 9° | 1 | 30 | 0 | 37 mm | Good | Surprise in January |
| February | 20° / 11° | 2 | 26 | 0 | 30 mm | Good | Surprise in February |
| March | 24° / 14° | 1 | 30 | 0 | 24 mm | Perfect | Surprise in March |
| April | 28° / 17° | 1 | 29 | 0 | 9 mm | Perfect | Surprise in April |
| May | 33° / 21° | 0 | 31 | 0 | 6 mm | Good | Surprise in May |
| June | 38° / 26° | 0 | 30 | 0 | 6 mm | Bad | Surprise in June |
| July | 39° / 30° | 4 | 27 | 0 | 63 mm | Bad | Surprise in July |
| August | 39° / 30° | 3 | 28 | 0 | 66 mm | Bad | Surprise in August |
| September | 36° / 28° | 2 | 28 | 0 | 53 mm | Ok | Surprise in September |
| October | 31° / 21° | 2 | 29 | 0 | 38 mm | Good | Surprise in October |
| November | 24° / 15° | 1 | 29 | 0 | 22 mm | Perfect | Surprise in November |
| December | 18° / 9° | 2 | 29 | 0 | 34 mm | Good | Surprise in December |