Climate averages 1991–2020
Greater Sudbury weather
in October.
A cool, wet month: the 6th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a cool month in Greater Sudbury: daytime highs average 10.9°C and nights cool to about 3.9°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 94 mm of rain on roughly 13 days, which makes October a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 10 h 57 min on an average October day.
The nearest other city in this atlas is Barrie (254 km away). In October its highs average 12.9°C, 2.0°C warmer than Greater Sudbury, with 82 mm of rain.
Among the 86 cities listed in Canada, Greater Sudbury ranks 74th of 86 for the warmest October highs and joint 44th of 86 for the driest October (rainfall, lowest first). The mean October high of those 86 cities is 12.7°C; Greater Sudbury is 1.8°C cooler than that mean.
From October to November, average highs fall by 7.6°C to 3.3°C, and monthly rainfall falls from 94 mm to 73 mm.
The annual picture
October in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Greater Sudbury climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -7.4°C-16.7°C | -16.7°C | 53 | 10.1 | 9.09 h |
| February | -5.7°C-15.2°C | -15.2°C | 41 | 7.7 | 10.310 h |
| March | 0.4°C-9.4°C | -9.4°C | 50 | 7.8 | 11.912 h |
| April | 8.2°C-2.0°C | -2.0°C | 70 | 9.8 | 13.514 h |
| May | 16.8°C5.8°C | 5.8°C | 72 | 10.6 | 15.015 h |
| June | 22.1°C12.1°C | 12.1°C | 81 | 10.7 | 15.716 h |
| July | 24.2°C15.0°C | 15.0°C | 87 | 10.7 | 15.415 h |
| August | 23.0°C14.4°C | 14.4°C | 90 | 11.2 | 14.214 h |
| September | 18.6°C10.5°C | 10.5°C | 92 | 11.0 | 12.613 h |
| October, selected | 10.9°C3.9°C | 3.9°C | 94 | 12.7 | 10.911 h |
| November | 3.3°C-3.4°C | -3.4°C | 73 | 11.0 | 9.59 h |
| December | -3.4°C-11.4°C | -11.4°C | 59 | 11.1 | 8.79 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- Barrie in OctoberCanada · 254 kmHigh 12.9°C · Low 6.0°C · 82 mm rain
- Sault Ste. Marie in OctoberCanada · 256 kmHigh 11.5°C · Low 5.5°C · 101 mm rain
- Newmarket in OctoberCanada · 296 kmHigh 13.5°C · Low 6.0°C · 75 mm rain
- Caledon in OctoberCanada · 302 kmHigh 12.6°C · Low 5.1°C · 76 mm rain
- Richmond Hill in OctoberCanada · 316 kmHigh 13.7°C · Low 6.5°C · 75 mm rain
- Vaughan in OctoberCanada · 317 kmHigh 13.8°C · Low 6.8°C · 75 mm rain
- Peterborough, Canada in OctoberCanada · 321 kmHigh 13.3°C · Low 6.3°C · 85 mm rain
- Markham in OctoberCanada · 321 kmHigh 14.0°C · Low 7.1°C · 91 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Greater Sudbury) is explained once on the Greater Sudbury year overview and on the Sources, method and limits page.