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