Click on a day for an hourly weather forecast
The weather in Mission in September is very hot. The average temperatures are between 26°C and 34°C, drinking water regularly is advisable.
You can expect about 3 to 8 days of rain in Mission during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Mission in September 2025.
If you’re planning to visit Mission in the near future, we highly recommend that you review the 14 day weather forecast for Mission before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 21° / 13° | 2 | 29 | 0 | 38 mm | Good | Mission in January |
| February | 24° / 15° | 2 | 26 | 0 | 25 mm | Perfect | Mission in February |
| March | 28° / 18° | 2 | 29 | 0 | 29 mm | Perfect | Mission in March |
| April | 31° / 20° | 3 | 27 | 0 | 33 mm | Good | Mission in April |
| May | 33° / 23° | 4 | 27 | 0 | 67 mm | Good | Mission in May |
| June | 35° / 25° | 5 | 25 | 0 | 88 mm | Ok | Mission in June |
| July | 36° / 25° | 3 | 28 | 0 | 79 mm | Ok | Mission in July |
| August | 37° / 27° | 3 | 28 | 0 | 44 mm | Ok | Mission in August |
| September | 34° / 26° | 7 | 23 | 0 | 132 mm | Bad | Mission in September |
| October | 31° / 22° | 2 | 29 | 0 | 38 mm | Good | Mission in October |
| November | 26° / 18° | 2 | 28 | 0 | 44 mm | Perfect | Mission in November |
| December | 23° / 15° | 2 | 29 | 0 | 41 mm | Perfect | Mission in December |