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The weather in Ontario in January is very cold with temperatures between -7°C and -2°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Ontario during the month of January. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Let it snow! You can expect Ontario to be covered in white during the month of January. Be sure to bundle up when you venture outside, or take the opportunity to enjoy hot cocoa by the fire for warmth this month.
Our weather forecast can give you a great sense of what weather to expect in Ontario in January 2025.
If you’re planning to visit Ontario in the near future, we highly recommend that you review the 14 day weather forecast for Ontario before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -2° / -7° | 6 | 9 | 17 | 54 mm | Awful | Ontario in January |
| February | -2° / -7° | 5 | 8 | 15 | 46 mm | Awful | Ontario in February |
| March | 4° / -2° | 7 | 15 | 9 | 63 mm | Awful | Ontario in March |
| April | 9° / 3° | 8 | 18 | 4 | 82 mm | Awful | Ontario in April |
| May | 16° / 9° | 7 | 24 | 0 | 100 mm | Ok | Ontario in May |
| June | 21° / 14° | 7 | 23 | 0 | 120 mm | Ok | Ontario in June |
| July | 25° / 19° | 7 | 24 | 0 | 128 mm | Good | Ontario in July |
| August | 25° / 19° | 5 | 26 | 0 | 114 mm | Perfect | Ontario in August |
| September | 22° / 15° | 5 | 25 | 0 | 74 mm | Good | Ontario in September |
| October | 15° / 9° | 7 | 23 | 0 | 88 mm | Ok | Ontario in October |
| November | 8° / 3° | 5 | 19 | 5 | 50 mm | Bad | Ontario in November |
| December | 2° / -2° | 7 | 11 | 13 | 52 mm | Awful | Ontario in December |