Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be 50°F. Select a day from the live weather forecast for Thunder Bay, Ontario, Canada for more weather parameters.

5-day weather forecast updated at 04:00 on Thursday 30th October 2025 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 Thursday 30th October 2025

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 50°F, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 4 mph from the north-west.

  • 50°F maximum temperature50
    °F maximum temperature
  • 37°F minimum temperature37
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 48°F wind chill48
    °F wind chill
  • Light breeze of 4 mph from the North-West4
    mph wind from NW

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Thunder Bay weather for Friday 31st October 2025

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 46°F, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the north.

  • 46°F maximum temperature46
    °F maximum temperature
  • 34°F minimum temperature34
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 41°F wind chill41
    °F wind chill
  • Gentle breeze of 9 mph from the North9
    mph wind from N

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Thunder Bay weather for Saturday 1st November 2025

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 43°F, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 mph from the north.

  • 43°F maximum temperature43
    °F maximum temperature
  • 30°F minimum temperature30
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 39°F wind chill39
    °F wind chill
  • Light breeze of 7 mph from the North7
    mph wind from N

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Thunder Bay weather for Sunday 2nd November 2025

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 48°F, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 17 mph from the south-west.

  • 48°F maximum temperature48
    °F maximum temperature
  • 30°F minimum temperature30
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 41°F wind chill41
    °F wind chill
  • Moderate breeze of 17 mph from the South-West17
    mph wind from SW

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Thunder Bay weather for Monday 3rd November 2025

Expect mostly cloudy with light rain in Thunder Bay, Ontario with a maximum temperature of 50°F, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 10% chance of some rain and a moderate breeze of 17 mph from the west.

  • 50°F maximum temperature50
    °F maximum temperature
  • 37°F minimum temperature37
    °F minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 10% chance of some rain10
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 17 mph from the West17
    mph wind from W

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