Thunder Bay 7-day weather forecast

Written by:
December 29, 2025
ESOlex // Shutterstock

Thunder Bay 7-day weather forecast

Stacker created the forecast for Thunder Bay, Ontario using data from OpenWeather. This week's high is 1 °C on Thursday, while the low is -15 °C on Sunday. There are expected to be 0 sunny days and snow on 1 day this week.

There are currently no weather alerts.

Monday, January 5

- High of -3 °C, low of -13 °C (90% humidity)
- Partly cloudy with a 100% chance of snow (1 mm of snow)
- Light air (11 km/h wind)
- Sunrise at 8:47 AM, sunset at 5:16 PM
1 / 6
Gary Whitton // Shutterstock

Tuesday, January 6

- High of 0 °C, low of -10 °C (94% humidity)
- Overcast with a 0% chance of snow
- Light breeze (13 km/h wind)
- Sunrise at 8:47 AM, sunset at 5:17 PM
2 / 6
Marian Weyo // Shutterstock

Wednesday, January 7

- High of -4 °C, low of -14 °C (93% humidity)
- Overcast with a 0% chance of snow
- Light air (9 km/h wind)
- Sunrise at 8:47 AM, sunset at 5:18 PM
3 / 6
Leonid Ikan // Shutterstock

Thursday, January 8

- High of 1 °C, low of -10 °C (90% humidity)
- Overcast with a 0% chance of snow
- Light air (9 km/h wind)
- Sunrise at 8:46 AM, sunset at 5:20 PM
4 / 6
Hellame // Shutterstock

Friday, January 9

- High of -2 °C, low of -10 °C (83% humidity)
- Overcast with a 0% chance of snow
- Light air (8 km/h wind)
- Sunrise at 8:46 AM, sunset at 5:21 PM
5 / 6
Leonid Ikan // Shutterstock

Saturday, January 10

- High of -6 °C, low of -10 °C (76% humidity)
- Overcast with a 0% chance of snow
- Light breeze (20 km/h wind)
- Sunrise at 8:46 AM, sunset at 5:22 PM
- Last quarter moon
6 / 6
VOJTa Herout // Shutterstock

Sunday, January 11

- High of -4 °C, low of -15 °C (83% humidity)
- Partly cloudy with a 0% chance of snow
- Light air (12 km/h wind)
- Sunrise at 8:45 AM, sunset at 5:23 PM

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