Thunder Bay 7-day weather forecast

Written by:
April 21, 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 7 °C on Wednesday, while the low is -1 °C on Tuesday. There are expected to be 0 sunny days, snow on 1 day, and 4 days of rain this week.

There are currently no weather alerts.

Monday, April 21

- High of 5 °C, low of 1 °C (95% humidity)
- Overcast with a 100% chance of rain (5 mm of rain)
- Moderate risk of harm from sun exposure (2 UV index)
- Light breeze (22 km/h wind)
- Sunrise at 6:54 AM, sunset at 8:56 PM
1 / 6
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Tuesday, April 22

- High of 4 °C, low of -1 °C (85% humidity)
- Mostly cloudy with a 0% chance of snow
- Moderate risk of harm from sun exposure (4 UV index)
- Light breeze (13 km/h wind)
- Sunrise at 6:52 AM, sunset at 8:57 PM
2 / 6
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Wednesday, April 23

- High of 7 °C, low of 1 °C (95% humidity)
- Overcast with a 20% chance of snow (0 mm of snow)
- Light breeze (13 km/h wind)
- Sunrise at 6:51 AM, sunset at 8:59 PM
3 / 6
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Thursday, April 24

- High of 4 °C, low of 2 °C (94% humidity)
- Overcast with a 100% chance of rain (5 mm of rain)
- Moderate risk of harm from sun exposure (3 UV index)
- Light breeze (16 km/h wind)
- Sunrise at 6:49 AM, sunset at 9:00 PM
4 / 6
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Friday, April 25

- High of 6 °C, low of 2 °C (90% humidity)
- Overcast with a 100% chance of rain (3 mm of rain)
- Light breeze (18 km/h wind)
- Sunrise at 6:47 AM, sunset at 9:01 PM
5 / 6
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Saturday, April 26

- High of 7 °C, low of 1 °C (53% humidity)
- Partly cloudy with a 0% chance of snow
- Light breeze (17 km/h wind)
- Sunrise at 6:45 AM, sunset at 9:03 PM
6 / 6
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Sunday, April 27

- High of 7 °C, low of 0 °C (65% humidity)
- Partly cloudy with a 58% chance of rain (0 mm of rain)
- Light breeze (14 km/h wind)
- Sunrise at 6:44 AM, sunset at 9:04 PM
- New moon

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