Thunder Bay 7-day weather forecast

Written by:
March 23, 2026
ESOlex // Shutterstock

Thunder Bay 7-day weather forecast

created the forecast for Thunder Bay, Ontario using data from . This week's high is 5 掳C on Saturday, while the low is -16 掳C on Tuesday. There are expected to be 2 sunny days, snow on 2 days, and 2 days of rain this week.

There are currently no weather alerts.

Monday, April 6

- High of -2 掳C, low of -13 掳C (66% humidity)
- Overcast with a 70% chance of snow (1 mm of snow)
- Moderate risk of harm from sun exposure (4 UV index)
- Light breeze (22 km/h wind)
- Sunrise at 7:24 AM, sunset at 8:33 PM
1 / 6
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Tuesday, April 7

- High of 0 掳C, low of -16 掳C (70% humidity)
- Mostly sunny with a 0% chance of snow
- Moderate risk of harm from sun exposure (5 UV index)
- Light breeze (15 km/h wind)
- Sunrise at 7:22 AM, sunset at 8:35 PM
2 / 6
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Wednesday, April 8

- High of 1 掳C, low of -5 掳C (99% humidity)
- Overcast with a 100% chance of rain (9 mm of rain)
- Light breeze (15 km/h wind)
- Sunrise at 7:20 AM, sunset at 8:36 PM
3 / 6
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Thursday, April 9

- High of 4 掳C, low of -2 掳C (94% humidity)
- Partly sunny with a 80% chance of snow (0 mm of snow)
- Moderate risk of harm from sun exposure (4 UV index)
- Light breeze (20 km/h wind)
- Sunrise at 7:18 AM, sunset at 8:38 PM
4 / 6
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Friday, April 10

- High of 2 掳C, low of -3 掳C (76% humidity)
- Partly sunny with a 0% chance of snow
- Light air (11 km/h wind)
- Sunrise at 7:16 AM, sunset at 8:39 PM
- Last quarter moon
5 / 6
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Saturday, April 11

- High of 5 掳C, low of -4 掳C (79% humidity)
- Fair with a 0% chance of snow
- Light air (8 km/h wind)
- Sunrise at 7:14 AM, sunset at 8:41 PM
6 / 6
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Sunday, April 12

- High of 2 掳C, low of -1 掳C (98% humidity)
- Overcast with a 100% chance of rain (2 mm of rain)
- Light breeze (13 km/h wind)
- Sunrise at 7:12 AM, sunset at 8:42 PM

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