Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be 0°C. Select a day from the live weather forecast for Thunder Bay, Ontario, Canada for more weather parameters.

5-day weather forecast updated at 04:01 on Thursday 8th 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 8th January 2026

Expect mostly cloudy with light snow in Thunder Bay, Ontario with a maximum temperature of 0°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0-2 cm of snow expected with 3% chance of some snow and a light breeze of 12 kph from the north-west.

  • 0°C maximum temperature0
    °C maximum temperature
  • -7°C minimum temperature-7
    °C minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 3% chance of some snow3
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -3°C wind chill-3
    °C wind chill
  • Light breeze of 12 kph from the North-West12
    kph wind from NW

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Thunder Bay weather for Friday 9th January 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of -2°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 15 kph from the north-west.

  • -2°C maximum temperature-2
    °C maximum temperature
  • -9°C minimum temperature-9
    °C 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
  • -7°C wind chill-7
    °C wind chill
  • Gentle breeze of 15 kph from the North-West15
    kph wind from NW

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Thunder Bay weather for Saturday 10th January 2026

Expect overcast 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 47% chance of some snow and a gentle breeze of 17 kph from the east.

  • -2°C maximum temperature-2
    °C maximum temperature
  • -9°C minimum temperature-9
    °C minimum temperature
  • Overcast with light snow
    overcast with light snow
  • No hours of bright sunshine0
    hours of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 47% chance of some snow47
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -8°C wind chill-8
    °C wind chill
  • Gentle breeze of 17 kph from the East17
    kph wind from E

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Thunder Bay weather for Sunday 11th January 2026

Expect mostly cloudy with light snow in Thunder Bay, Ontario with a maximum temperature of -5°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0-2 cm of snow expected with 19% chance of some snow and a gentle breeze of 17 kph from the west.

  • -5°C maximum temperature-5
    °C maximum temperature
  • -12°C minimum temperature-12
    °C minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 19% chance of some snow19
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -10°C wind chill-10
    °C wind chill
  • Gentle breeze of 17 kph from the West17
    kph wind from W

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Thunder Bay weather for Monday 12th January 2026

Expect cloudy with sleet or snow in Thunder Bay, Ontario with a maximum temperature of 1°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0-2 mm of sleet/snow expected with 28% chance of some sleet or snow and a light breeze of 11 kph from the west.

  • 1°C maximum temperature1
    °C maximum temperature
  • -6°C minimum temperature-6
    °C minimum temperature
  • Cloudy with sleet or snow
    cloudy with sleet or snow
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 28% chance of some sleet or snow28
    % chance of some sleet or snow
  • 0-2 mm of sleet/snow expected<2
    mm of sleet/snow expected
  • -3°C wind chill-3
    °C wind chill
  • Light breeze of 11 kph from the West11
    kph wind from W

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

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