Thunder Bay Weather in October
Average highs run from 14°C on October 1 to 5°C on October 31, and lows from 4°C to -2°C. Normal precipitation for the month is 65 mm over about 12 wet days.
October day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
October at a glance
- Average high
- 10°C
- Average low
- 1°C
- Precipitation
- 65 mm
- Record high
- 30°COct 2, 2023
- Record low
- -12°COct 30, 2020
- Daylight
- 11 h 39 min to 9 h 58 min
- Cloud cover
- 74%
- Humidity
- 80%
- Dew point
- 2°C
- Wind
- 10.4 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Oct 1 | 14°C | 4°C | 24°C 2021 | -3°C 2018 | 41% |
| Oct 2 | 14°C | 4°C | 30°C 2023 | -3°C 2015 | 41% |
| Oct 3 | 13°C | 4°C | 29°C 2023 | -2°C 2015 | 39% |
| Oct 4 | 13°C | 4°C | 28°C 2025 | -4°C 2020 | 38% |
| Oct 5 | 13°C | 4°C | 27°C 2025 | 0°C 2015 | 37% |
| Oct 6 | 13°C | 3°C | 21°C 2025 | -3°C 2012 | 38% |
| Oct 7 | 12°C | 3°C | 17°C 2021 | -6°C 2012 | 37% |
| Oct 8 | 12°C | 3°C | 18°C 2017 | -3°C 2025 | 36% |
| Oct 9 | 12°C | 3°C | 23°C 2013 | -4°C 2022 | 36% |
| Oct 10 | 11°C | 3°C | 21°C 2016 | -4°C 2022 | 36% |
| Oct 11 | 11°C | 2°C | 24°C 2015 | -4°C 2012 | 36% |
| Oct 12 | 11°C | 2°C | 20°C 2013 | -6°C 2012 | 38% |
| Oct 13 | 11°C | 2°C | 16°C 2021 | -6°C 2018 | 37% |
| Oct 14 | 10°C | 2°C | 18°C 2014 | -3°C 2017 | 38% |
| Oct 15 | 10°C | 2°C | 20°C 2016 | -2°C 2020 | 38% |
| Oct 16 | 10°C | 2°C | 14°C 2017 | -4°C 2020 | 38% |
| Oct 17 | 9°C | 1°C | 19°C 2017 | -8°C 2015 | 38% |
| Oct 18 | 9°C | 1°C | 21°C 2017 | -8°C 2018 | 40% |
| Oct 19 | 9°C | 1°C | 25°C 2021 | -7°C 2020 | 40% |
| Oct 20 | 8°C | 1°C | 21°C 2017 | -9°C 2020 | 40% |
| Oct 21 | 8°C | 0°C | 21°C 2017 | -6°C 2021 | 39% |
| Oct 22 | 8°C | 0°C | 17°C 2017 | -6°C 2018 | 39% |
| Oct 23 | 8°C | 0°C | 17°C 2022 | -4°C 2020 | 39% |
| Oct 24 | 7°C | 0°C | 19°C 2022 | -7°C 2020 | 40% |
| Oct 25 | 7°C | 0°C | 15°C 2014 | -9°C 2020 | 39% |
| Oct 26 | 7°C | 0°C | 13°C 2025 | -6°C 2015 | 39% |
| Oct 27 | 6°C | -1°C | 14°C 2025 | -7°C 2020 | 37% |
| Oct 28 | 6°C | -1°C | 15°C 2022 | -9°C 2013 | 37% |
| Oct 29 | 6°C | -1°C | 18°C 2022 | -11°C 2013 | 36% |
| Oct 30 | 6°C | -1°C | 18°C 2022 | -12°C 2020 | 35% |
| Oct 31 | 5°C | -2°C | 12°C 2022 | -9°C 2023 | 33% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EDT).
- October 1
- sunrise 7:57 AM, sunset 7:36 PM
- October 31
- sunrise 8:41 AM, sunset 6:39 PM
Other months
Sources
Records: NOAA GHCN-Daily, station CA006048260, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.