Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be 13°C. Select a day from the live weather forecast for Thunder Bay, Ontario, Canada for more weather parameters.

• Monday
  5th Oct
  13
  0
  
  7
  3
• Tuesday
  6th Oct
  18
  4
  
  2
  1
• Wednesday
  7th Oct
  18
  7
  
  5
  3
• Thursday
  8th Oct
  15
  4
  
  7
  3
• Friday
  9th Oct
  13
  2
  
  4
  2

5-day weather forecast updated at 04:00 on Monday 5th October 2026 GMT

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The 5-day weather forecast for Ontario (Thunder Bay) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Thunder Bay weather forecast by day

Below are the detailed weather forecasts for Thunder Bay for the next 5 days.

Thunder Bay weather for Monday 5th October 2026

Expect scattered clouds in Thunder Bay, Ontario with a maximum temperature of 13°C, maximum UV of 3 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the north-west.

• 13
  °C maximum temperature
• 0
  °C minimum temperature
• 
  scattered clouds
• 7
  hours of sunshine
• 3
  UV index (Moderate)
• 0
  mm of rainfall expected
• 0
  no heat & humidity
• 16
  kph wind from NW

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Thunder Bay weather for Tuesday 6th October 2026

Expect mostly cloudy with light rain in Thunder Bay, Ontario with a maximum temperature of 18°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 14% chance of some rain and a gentle breeze of 15 kph from the west.

• 18
  °C maximum temperature
• 4
  °C minimum temperature
• 
  mostly cloudy with light rain
• 2
  hours of sunshine
• 1
  UV index (Low)
• 14
  % chance of some rain
• <2
  mm of rainfall expected
• 0
  no heat & humidity
• 15
  kph wind from W

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Thunder Bay weather for Wednesday 7th October 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the west.

• 18
  °C maximum temperature
• 7
  °C minimum temperature
• 
  broken clouds
• 5
  hours of sunshine
• 3
  UV index (Moderate)
• 0
  mm of rainfall expected
• 18
  °C wind chill
• 19
  kph wind from W

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Thunder Bay weather for Thursday 8th October 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 15°C, maximum UV of 3 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the north-west.

• 15
  °C maximum temperature
• 4
  °C minimum temperature
• 
  broken clouds
• 7
  hours of sunshine
• 3
  UV index (Moderate)
• 0
  mm of rainfall expected
• 0
  no heat & humidity
• 19
  kph wind from NW

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Thunder Bay weather for Friday 9th October 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 13°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the north-west.

• 13
  °C maximum temperature
• 2
  °C minimum temperature
• 
  broken clouds
• 4
  hours of sunshine
• 2
  UV index (Low)
• 0
  mm of rainfall expected
• 0
  no heat & humidity
• 17
  kph wind from NW

Back to top

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• Offers include discounts, upgrades & more

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