Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be -3°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 Thursday 12th February 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 12th February 2026

Expect scattered clouds in Thunder Bay, Ontario with a maximum temperature of -3°C, maximum UV of 1 (Low) and 8 hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 8 kph from the north-west.

  • -3°C maximum temperature-3
    °C maximum temperature
  • -14°C minimum temperature-14
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 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
  • -6°C wind chill-6
    °C wind chill
  • Light breeze of 8 kph from the North-West8
    kph wind from NW

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Thunder Bay weather for Friday 13th February 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 2°C, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the north-west.

  • 2°C maximum temperature2
    °C maximum temperature
  • -7°C minimum temperature-7
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • -2°C wind chill-2
    °C wind chill
  • Gentle breeze of 14 kph from the North-West14
    kph wind from NW

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Thunder Bay weather for Saturday 14th February 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 1°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the south-east.

  • 1°C maximum temperature1
    °C maximum temperature
  • -7°C minimum temperature-7
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • -1°C wind chill-1
    °C wind chill
  • Little or no wind of 6 kph from the South-East6
    kph wind from SE

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Thunder Bay weather for Sunday 15th February 2026

Expect overcast skies in Thunder Bay, Ontario with a maximum temperature of 2°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the north-west.

  • 2°C maximum temperature2
    °C maximum temperature
  • -4°C minimum temperature-4
    °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 mm of rainfall expected0
    mm of rainfall expected
  • 0°C wind chill0
    °C wind chill
  • Light breeze of 7 kph from the North-West7
    kph wind from NW

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Thunder Bay weather for Monday 16th February 2026

Expect clear skies with flurries of snow in Thunder Bay, Ontario with a maximum temperature of 3°C, maximum UV of 1 (Low) and 7 hours of bright sunshine. There are 0-2 cm of snow expected with 21% chance of some snow and a light breeze of 7 kph from the west.

  • 3°C maximum temperature3
    °C maximum temperature
  • -4°C minimum temperature-4
    °C minimum temperature
  • Clear skies with flurries of snow
    clear skies with flurries of snow
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 21% chance of some snow21
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • 1°C wind chill1
    °C wind chill
  • Light breeze of 7 kph from the West7
    kph wind from W

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

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