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The weather in Sudbury in October is very cold with temperatures between 3°C and 10°C, warm clothes are a must.
You can expect rain for roughly half of the month of October in Sudbury. 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.
You can expect a few days of snow in Sudbury during October. It’s important to get out your snow boots and warm mittens to stay warm while you explore Sudbury.
Our weather forecast can give you a great sense of what weather to expect in Sudbury in October 2025.
If you’re planning to visit Sudbury in the near future, we highly recommend that you review the 14 day weather forecast for Sudbury before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -9° / -16° | 3 | 4 | 24 | 62 mm | Awful | Sudbury in January |
| February | -7° / -16° | 2 | 3 | 23 | 62 mm | Awful | Sudbury in February |
| March | -1° / -9° | 6 | 7 | 20 | 69 mm | Awful | Sudbury in March |
| April | 6° / -2° | 7 | 11 | 12 | 106 mm | Awful | Sudbury in April |
| May | 17° / 6° | 6 | 23 | 2 | 74 mm | Ok | Sudbury in May |
| June | 21° / 10° | 6 | 24 | 0 | 84 mm | Good | Sudbury in June |
| July | 24° / 13° | 5 | 26 | 0 | 79 mm | Perfect | Sudbury in July |
| August | 23° / 13° | 5 | 26 | 0 | 88 mm | Perfect | Sudbury in August |
| September | 18° / 9° | 6 | 24 | 0 | 92 mm | Good | Sudbury in September |
| October | 10° / 3° | 8 | 18 | 5 | 127 mm | Awful | Sudbury in October |
| November | 3° / -3° | 6 | 9 | 15 | 91 mm | Awful | Sudbury in November |
| December | -4° / -10° | 4 | 5 | 22 | 62 mm | Awful | Sudbury in December |