Thunder Bay weather in October
Temperature, rain and sunshine in October: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in October
Poor
Best time to visit: June – September
What is the weather like in Thunder Bay in October?
In October, Thunder Bay is cool: daytime highs average 10 °C, and nights cool down to about 6 °C. Expect around 4 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 79 mm in total. All in all, October is not an ideal month for a holiday in Thunder Bay.
October compared
How the weather changes from September to November. Tap a month to open it.
| SeptemberSep | OctoberOct | NovemberNov | |
|---|---|---|---|
| Score | 75 | 30 | 20 |
| Day | 18° | 10° | 3° |
| Night | 13° | 6° | −2° |
| Sun | 6 h | 4 h | 3 h |
| Rain days | 10 | 10 | 9 |
More details for October
- Daylight
- 10 h 55 min08:15 – 19:10
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 25 km/haverage daily peakAll months
- Cloud cover
- 67 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 1 day1 cm or more of fresh snowAll months
- Time zone
- UTC−4America/Toronto
How the score comes together
- Temperatureweight 50 %21 %
- Sunshineweight 20 %17 %
- Few rainy daysweight 30 %54 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- A jumper for the evenings
- Rain jacket or umbrella
Thunder Bay in October: quick answers
Is Thunder Bay hot in October?
No. In October, Thunder Bay is cool: daytime highs average 10 °C and nights drop to about 6 °C.
Does it rain much in Thunder Bay in October?
Rain is frequent, with about 10 rainy days and 79 mm in total.
Thunder Bay month by month
The whole year in Thunder BayAll destinations: CanadaWhere to go in October
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences