Click on a day for an hourly weather forecast
The temperatures in Winnipeg in September are usually low and can range between 10°C and 20°C.
You can expect about 3 to 8 days of rain in Winnipeg 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 Winnipeg in September 2025.
If you’re planning to visit Winnipeg in the near future, we highly recommend that you review the 14 day weather forecast for Winnipeg before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -12° / -19° | 2 | 10 | 20 | 28 mm | Awful | Winnipeg in January |
| February | -11° / -19° | 1 | 9 | 17 | 23 mm | Awful | Winnipeg in February |
| March | -2° / -9° | 4 | 12 | 15 | 39 mm | Awful | Winnipeg in March |
| April | 7° / -1° | 4 | 16 | 10 | 58 mm | Bad | Winnipeg in April |
| May | 17° / 7° | 7 | 22 | 1 | 116 mm | Ok | Winnipeg in May |
| June | 22° / 13° | 8 | 22 | 0 | 144 mm | Ok | Winnipeg in June |
| July | 26° / 15° | 5 | 26 | 0 | 96 mm | Perfect | Winnipeg in July |
| August | 26° / 14° | 5 | 26 | 0 | 88 mm | Perfect | Winnipeg in August |
| September | 20° / 10° | 4 | 26 | 0 | 75 mm | Good | Winnipeg in September |
| October | 10° / 4° | 5 | 21 | 6 | 60 mm | Bad | Winnipeg in October |
| November | 0° / -6° | 2 | 14 | 14 | 31 mm | Awful | Winnipeg in November |
| December | -10° / -15° | 2 | 12 | 18 | 28 mm | Awful | Winnipeg in December |