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The temperatures in Mississauga in May are quite cold with temperatures between 9°C and 18°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Mississauga during the month of May. 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 Mississauga in May 2025.
If you’re planning to visit Mississauga in the near future, we highly recommend that you review the 14 day weather forecast for Mississauga before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -2° / -7° | 6 | 5 | 20 | 103 mm | Awful | Mississauga in January |
| February | -1° / -7° | 6 | 4 | 19 | 115 mm | Awful | Mississauga in February |
| March | 5° / -2° | 9 | 10 | 12 | 114 mm | Awful | Mississauga in March |
| April | 11° / 3° | 10 | 14 | 6 | 144 mm | Awful | Mississauga in April |
| May | 18° / 9° | 7 | 23 | 0 | 141 mm | Ok | Mississauga in May |
| June | 23° / 14° | 7 | 23 | 0 | 160 mm | Good | Mississauga in June |
| July | 26° / 18° | 9 | 22 | 0 | 168 mm | Good | Mississauga in July |
| August | 26° / 18° | 8 | 23 | 0 | 163 mm | Good | Mississauga in August |
| September | 22° / 15° | 6 | 24 | 0 | 118 mm | Good | Mississauga in September |
| October | 15° / 9° | 9 | 21 | 1 | 145 mm | Ok | Mississauga in October |
| November | 8° / 3° | 7 | 15 | 8 | 103 mm | Awful | Mississauga in November |
| December | 2° / -2° | 8 | 8 | 16 | 112 mm | Awful | Mississauga in December |