Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be -2°C. 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 Friday 9th 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 Saturday 10th January 2026

Expect mostly cloudy with light snow in Thunder Bay, Ontario with a maximum temperature of -2°C and no hours of bright sunshine. There are 0-2 cm of snow expected with 70% chance of some snow and a gentle breeze of 18 kph from the north.

  • -2°C maximum temperature-2
    °C maximum temperature
  • -9°C minimum temperature-9
    °C minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • No hours of bright sunshine0
    hours of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 70% chance of some snow70
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -7°C wind chill-7
    °C wind chill
  • Gentle breeze of 18 kph from the North18
    kph wind from N

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Thunder Bay weather for Sunday 11th January 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of -5°C and 2 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 15 kph from the south-west.

  • -5°C maximum temperature-5
    °C maximum temperature
  • -14°C minimum temperature-14
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 2 hours of bright sunshine2
    hours of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 0 cm of snow expected0
    cm of snow expected
  • -10°C wind chill-10
    °C wind chill
  • Gentle breeze of 15 kph from the South-West15
    kph wind from SW

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Thunder Bay weather for Monday 12th January 2026

Expect overcast skies in Thunder Bay, Ontario with a maximum temperature of 0°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 13 kph from the west.

  • 0°C maximum temperature0
    °C maximum temperature
  • -7°C minimum temperature-7
    °C minimum temperature
  • Overcast skies
    overcast skies
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 cm of snow expected0
    cm of snow expected
  • -4°C wind chill-4
    °C wind chill
  • Gentle breeze of 13 kph from the West13
    kph wind from W

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Thunder Bay weather for Tuesday 13th January 2026

Expect mostly cloudy with light snow in Thunder Bay, Ontario with a maximum temperature of 0°C and 1 hour of bright sunshine. There are 2-5 cm of snow expected with 47% chance of some snow and a gentle breeze of 18 kph from the north.

  • 0°C maximum temperature0
    °C maximum temperature
  • -10°C minimum temperature-10
    °C minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • 1 hour of bright sunshine1
    hour of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 47% chance of some snow47
    % chance of some snow
  • 2-5 cm of snow expected<5
    cm of snow expected
  • -5°C wind chill-5
    °C wind chill
  • Gentle breeze of 18 kph from the North18
    kph wind from N

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Thunder Bay weather for Wednesday 14th January 2026

Expect clear skies in Thunder Bay, Ontario with a maximum temperature of -10°C, maximum UV of 1 (Low) and 9 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 14 kph from the north.

  • -10°C maximum temperature-10
    °C maximum temperature
  • -17°C minimum temperature-17
    °C minimum temperature
  • Clear skies
    clear skies
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 cm of snow expected0
    cm of snow expected
  • -17°C wind chill-17
    °C wind chill
  • Gentle breeze of 14 kph from the North14
    kph wind from N

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Metric (°C / mm)  |  Imperial (°F / inches)

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