Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be -5°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 Sunday 1st 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 Sunday 1st February 2026

Expect mostly cloudy with light snow in Thunder Bay, Ontario with a maximum temperature of -5°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 2-5 cm of snow expected with 99% chance of some snow and a gentle breeze of 17 kph from the south.

  • -5°C maximum temperature-5
    °C maximum temperature
  • -13°C minimum temperature-13
    °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)
  • 99% chance of some snow99
    % chance of some snow
  • 2-5 cm of snow expected<5
    cm of snow expected
  • -11°C wind chill-11
    °C wind chill
  • Gentle breeze of 17 kph from the South17
    kph wind from S

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Thunder Bay weather for Monday 2nd February 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of -9°C, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 16 kph from the north-west.

  • -9°C maximum temperature-9
    °C maximum temperature
  • -18°C minimum temperature-18
    °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 cm of snow expected0
    cm of snow expected
  • -16°C wind chill-16
    °C wind chill
  • Gentle breeze of 16 kph from the North-West16
    kph wind from NW

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Thunder Bay weather for Tuesday 3rd February 2026

Expect scattered clouds in Thunder Bay, Ontario with a maximum temperature of -11°C, maximum UV of 1 (Low) and 7 hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 11 kph from the north-west.

  • -11°C maximum temperature-11
    °C maximum temperature
  • -22°C minimum temperature-22
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 7 hours of bright sunshine7
    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
  • Light breeze of 11 kph from the North-West11
    kph wind from NW

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Thunder Bay weather for Wednesday 4th February 2026

Expect mostly cloudy with light snow in Thunder Bay, Ontario with a maximum temperature of -8°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0-2 cm of snow expected with 9% chance of some snow and a light breeze of 9 kph from the north-west.

  • -8°C maximum temperature-8
    °C maximum temperature
  • -20°C minimum temperature-20
    °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)
  • 9% chance of some snow9
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -12°C wind chill-12
    °C wind chill
  • Light breeze of 9 kph from the North-West9
    kph wind from NW

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Thunder Bay weather for Thursday 5th February 2026

Expect mostly cloudy with light snow in Thunder Bay, Ontario with a maximum temperature of -2°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 2-5 cm of snow expected with 72% chance of some snow and a light breeze of 11 kph from the south-west.

  • -2°C maximum temperature-2
    °C maximum temperature
  • -13°C minimum temperature-13
    °C minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 72% chance of some snow72
    % chance of some snow
  • 2-5 cm of snow expected<5
    cm of snow expected
  • -6°C wind chill-6
    °C wind chill
  • Light breeze of 11 kph from the South-West11
    kph wind from SW

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

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