Click on a day for an hourly weather forecast
The temperatures in Mexicali during September are extremely high, between 27°C and hot as 39°C, drinking water regularly is advisable.
You can expect a few rainy days in Mexicali 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 Mexicali in September 2026.
If you’re planning to visit Mexicali in the near future, we highly recommend that you review the 14 day weather forecast for Mexicali before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 21° / 10° | 1 | 30 | 0 | 14 mm | Good | Mexicali in January |
| February | 23° / 12° | 0 | 28 | 0 | 7 mm | Perfect | Mexicali in February |
| March | 27° / 14° | 0 | 31 | 0 | 8 mm | Perfect | Mexicali in March |
| April | 31° / 17° | 0 | 30 | 0 | 6 mm | Good | Mexicali in April |
| May | 35° / 20° | 0 | 31 | 0 | 3 mm | Ok | Mexicali in May |
| June | 41° / 25° | 0 | 30 | 0 | 4 mm | Awful | Mexicali in June |
| July | 42° / 30° | 1 | 30 | 0 | 34 mm | Awful | Mexicali in July |
| August | 42° / 31° | 1 | 30 | 0 | 26 mm | Awful | Mexicali in August |
| September | 39° / 27° | 1 | 29 | 0 | 20 mm | Bad | Mexicali in September |
| October | 32° / 21° | 1 | 30 | 0 | 9 mm | Good | Mexicali in October |
| November | 26° / 15° | 0 | 30 | 0 | 4 mm | Perfect | Mexicali in November |
| December | 20° / 10° | 1 | 30 | 0 | 10 mm | Good | Mexicali in December |