Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be -0°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 22nd January 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 January 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of -0°F, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 cm of snow expected and a moderate breeze of 13 mph from the north-west.

  • -0°F maximum temperature0
    °F maximum temperature
  • -17°F minimum temperature-17
    °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 cm of snow expected0
    cm of snow expected
  • -20°F wind chill-20
    °F wind chill
  • Moderate breeze of 13 mph from the North-West13
    mph wind from NW

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Thunder Bay weather for Friday 23rd January 2026

Expect clear skies in Thunder Bay, Ontario with a maximum temperature of -11°F, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 12 mph from the north-west.

  • -11°F maximum temperature-11
    °F maximum temperature
  • -20°F minimum temperature-20
    °F minimum temperature
  • Clear skies
    clear skies
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 cm of snow expected0
    cm of snow expected
  • -31°F wind chill-31
    °F wind chill
  • Gentle breeze of 12 mph from the North-West12
    mph wind from NW

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Thunder Bay weather for Saturday 24th January 2026

Expect scattered clouds in Thunder Bay, Ontario with a maximum temperature of -4°F, maximum UV of 1 (Low) and 6 hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 7 mph from the west.

  • -4°F maximum temperature-4
    °F maximum temperature
  • -22°F minimum temperature-22
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 cm of snow expected0
    cm of snow expected
  • -17°F wind chill-17
    °F wind chill
  • Light breeze of 7 mph from the West7
    mph wind from W

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Thunder Bay weather for Sunday 25th January 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of -0°F, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 6 mph from the north-west.

  • -0°F maximum temperature0
    °F maximum temperature
  • -18°F minimum temperature-18
    °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 cm of snow expected0
    cm of snow expected
  • -11°F wind chill-11
    °F wind chill
  • Light breeze of 6 mph from the North-West6
    mph wind from NW

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Thunder Bay weather for Monday 26th January 2026

Expect clear skies with flurries of snow in Thunder Bay, Ontario with a maximum temperature of 5°F, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0-2 cm of snow expected with 25% chance of some snow and a gentle breeze of 9 mph from the west.

  • 5°F maximum temperature5
    °F maximum temperature
  • -17°F minimum temperature-17
    °F minimum temperature
  • Clear skies with flurries of snow
    clear skies with flurries of snow
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 25% chance of some snow25
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -8°F wind chill-8
    °F wind chill
  • Gentle breeze of 9 mph from the West9
    mph wind from W

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