Thunder Bay 7-day weather forecast

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March 23, 2026
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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 Monday, while the low is -13 °C on Wednesday. There is expected to be 1 sunny day and snow on 7 days this week.

Environment Canada has issued a weather until Monday at 03:35 PM.

Monday, March 30

- High of 1 °C, low of -7 °C (79% humidity)
- Overcast with a 100% chance of snow (1 mm of snow)
- Moderate risk of harm from sun exposure (4 UV index)
- Light breeze (14 km/h wind)
- Sunrise at 7:38 AM, sunset at 8:23 PM
1 / 6
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Tuesday, March 31

- High of -3 °C, low of -9 °C (91% humidity)
- Overcast with a 100% chance of snow (8 mm of snow)
- Moderate risk of harm from sun exposure (3 UV index)
- Light breeze (21 km/h wind)
- Sunrise at 7:36 AM, sunset at 8:25 PM
2 / 6
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Wednesday, April 1

- High of -2 °C, low of -13 °C (77% humidity)
- Mostly cloudy with a 48% chance of snow (0 mm of snow)
- Moderate risk of harm from sun exposure (4 UV index)
- Light breeze (14 km/h wind)
- Sunrise at 7:34 AM, sunset at 8:26 PM
- Full moon
3 / 6
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Thursday, April 2

- High of -3 °C, low of -8 °C (87% humidity)
- Overcast with a 100% chance of snow (7 mm of snow)
- Moderate risk of harm from sun exposure (4 UV index)
- Gentle breeze (27 km/h wind)
- Sunrise at 7:32 AM, sunset at 8:27 PM
4 / 6
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Friday, April 3

- High of 1 °C, low of -6 °C (84% humidity)
- Mostly cloudy with a 100% chance of snow (5 mm of snow)
- Moderate risk of harm from sun exposure (5 UV index)
- Light breeze (21 km/h wind)
- Sunrise at 7:30 AM, sunset at 8:29 PM
5 / 6
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Saturday, April 4

- High of 0 °C, low of -3 °C (92% humidity)
- Overcast with a 100% chance of snow (15 mm of snow)
- Moderate risk of harm from sun exposure (5 UV index)
- Gentle breeze (28 km/h wind)
- Sunrise at 7:28 AM, sunset at 8:30 PM
6 / 6
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Sunday, April 5

- High of 1 °C, low of -7 °C (86% humidity)
- Mostly sunny with a 20% chance of snow (0 mm of snow)
- Moderate risk of harm from sun exposure (5 UV index)
- Light breeze (21 km/h wind)
- Sunrise at 7:26 AM, sunset at 8:32 PM

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