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