Thunder Bay 7-day weather forecast

Written by:
September 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 14 °C on Monday, while the low is 4 °C on Tuesday. There is expected to be 1 sunny day and rain on 5 days this week.

There are currently no weather alerts.

Monday, October 13

- High of 14 °C, low of 8 °C (52% humidity)
- Sunny with a 100% chance of rain (5 mm of rain)
- Moderate risk of harm from sun exposure (3 UV index)
- Light breeze (27 km/h wind)
- Sunrise at 8:13 AM, sunset at 7:12 PM
- Last quarter moon
1 / 6
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Tuesday, October 14

- High of 12 °C, low of 4 °C (45% humidity)
- Partly sunny with a 0% chance of snow
- Moderate risk of harm from sun exposure (3 UV index)
- Light breeze (18 km/h wind)
- Sunrise at 8:15 AM, sunset at 7:10 PM
2 / 6
Leonid Ikan // Shutterstock

Wednesday, October 15

- High of 12 °C, low of 5 °C (53% humidity)
- Overcast with a 0% chance of snow
- Moderate risk of harm from sun exposure (3 UV index)
- Light air (11 km/h wind)
- Sunrise at 8:16 AM, sunset at 7:08 PM
3 / 6
Alex Stemmer // Shutterstock

Thursday, October 16

- High of 11 °C, low of 9 °C (96% humidity)
- Overcast with a 100% chance of rain (4 mm of rain)
- Light breeze (17 km/h wind)
- Sunrise at 8:18 AM, sunset at 7:06 PM
4 / 6
Onishchenko Natalya // Shutterstock

Friday, October 17

- High of 14 °C, low of 12 °C (85% humidity)
- Overcast with a 100% chance of rain (2 mm of rain)
- Light breeze (17 km/h wind)
- Sunrise at 8:19 AM, sunset at 7:04 PM
5 / 6
Marian Weyo // Shutterstock

Saturday, October 18

- High of 12 °C, low of 7 °C (79% humidity)
- Overcast with a 100% chance of rain (4 mm of rain)
- Light breeze (27 km/h wind)
- Sunrise at 8:21 AM, sunset at 7:02 PM
6 / 6
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Sunday, October 19

- High of 7 °C, low of 4 °C (96% humidity)
- Overcast with a 100% chance of rain (3 mm of rain)
- Light breeze (18 km/h wind)
- Sunrise at 8:22 AM, sunset at 7:00 PM

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