Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be 14°C. Select a day from the live weather forecast for Thunder Bay, Ontario, Canada for more weather parameters.

  • Thursday
    22nd Oct
    Scattered clouds
  • Friday
    23rd Oct
    Sunshine and showers (0-2 mm of rainfall expected)
  • Saturday
    24th Oct
    Mostly cloudy with light rain (0-2 mm of rainfall expected)
  • Sunday
    25th Oct
    Broken clouds
  • Monday
    26th Oct
    Broken clouds

5-day weather forecast updated at 04:01 on Thursday 22nd 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 Thursday 22nd October 2026

Expect scattered clouds in Thunder Bay, Ontario with a maximum temperature of 14°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the south-east.

  • 14°C maximum temperature14
    °C maximum temperature
  • 0°C minimum temperature0
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 14°C wind chill14
    °C wind chill
  • Light breeze of 9 kph from the South-East9
    kph wind from SE

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Thunder Bay weather for Friday 23rd October 2026

Expect sunshine and showers in Thunder Bay, Ontario with a maximum temperature of 15°C, maximum UV of 1 (Low) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 1% chance of some rain and a light breeze of 8 kph from the east.

  • 15°C maximum temperature15
    °C maximum temperature
  • 5°C minimum temperature5
    °C minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 1% chance of some rain1
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 8 kph from the East8
    kph wind from E

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Thunder Bay weather for Saturday 24th October 2026

Expect mostly cloudy with light rain in Thunder Bay, Ontario with a maximum temperature of 17°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 46% chance of some rain and a gentle breeze of 18 kph from the south.

  • 17°C maximum temperature17
    °C maximum temperature
  • 8°C minimum temperature8
    °C 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)
  • 46% chance of some rain46
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 18 kph from the South18
    kph wind from S

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Thunder Bay weather for Sunday 25th October 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 12°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the west.

  • 12°C maximum temperature12
    °C maximum temperature
  • 2°C minimum temperature2
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 12°C wind chill12
    °C wind chill
  • Gentle breeze of 17 kph from the West17
    kph wind from W

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Thunder Bay weather for Monday 26th October 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 8°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the north.

  • 8°C maximum temperature8
    °C maximum temperature
  • 0°C minimum temperature0
    °C 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
  • 6°C wind chill6
    °C wind chill
  • Light breeze of 10 kph from the North10
    kph wind from N

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