Click on a day for an hourly weather forecast
The temperatures in Saint Joseph during September are extremely high, between 28°C and hot as 29°C, drinking water regularly is advisable.
You can expect rain for roughly half of the month of September in Saint Joseph. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Saint Joseph in September 2025.
If you’re planning to visit Saint Joseph in the near future, we highly recommend that you review the 14 day weather forecast for Saint Joseph before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 27° / 26° | 2 | 29 | 0 | 48 mm | Perfect | Saint Joseph in January |
| February | 27° / 25° | 1 | 27 | 0 | 36 mm | Perfect | Saint Joseph in February |
| March | 27° / 26° | 1 | 30 | 0 | 47 mm | Perfect | Saint Joseph in March |
| April | 27° / 26° | 3 | 27 | 0 | 68 mm | Perfect | Saint Joseph in April |
| May | 28° / 27° | 4 | 27 | 0 | 102 mm | Perfect | Saint Joseph in May |
| June | 28° / 27° | 6 | 24 | 0 | 150 mm | Perfect | Saint Joseph in June |
| July | 28° / 27° | 10 | 21 | 0 | 196 mm | Good | Saint Joseph in July |
| August | 29° / 28° | 11 | 20 | 0 | 277 mm | Ok | Saint Joseph in August |
| September | 29° / 28° | 10 | 20 | 0 | 216 mm | Ok | Saint Joseph in September |
| October | 29° / 28° | 10 | 21 | 0 | 231 mm | Ok | Saint Joseph in October |
| November | 28° / 27° | 7 | 23 | 0 | 161 mm | Good | Saint Joseph in November |
| December | 28° / 27° | 2 | 29 | 0 | 66 mm | Perfect | Saint Joseph in December |