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 Thursday 2nd April 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 2nd April 2026

Expect mostly cloudy with snow in Thunder Bay, Ontario with a maximum temperature of -2°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 5-10 cm of snow expected with 100% chance of some snow and a moderate breeze of 24 kph from the east.

  • -2°C maximum temperature-2
    °C maximum temperature
  • -5°C minimum temperature-5
    °C minimum temperature
  • Mostly cloudy with snow
    mostly cloudy with snow
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 100% chance of some snow100
    % chance of some snow
  • 5-10 cm of snow expected<10
    cm of snow expected
  • -8°C wind chill-8
    °C wind chill
  • Moderate breeze of 24 kph from the East24
    kph wind from E

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Thunder Bay weather for Friday 3rd April 2026

Expect mostly cloudy with snow in Thunder Bay, Ontario with a maximum temperature of 3°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 5-10 cm of snow expected with 43% chance of some snow and a moderate breeze of 20 kph from the north.

  • 3°C maximum temperature3
    °C maximum temperature
  • -4°C minimum temperature-4
    °C minimum temperature
  • Mostly cloudy with snow
    mostly cloudy with snow
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 43% chance of some snow43
    % chance of some snow
  • 5-10 cm of snow expected<10
    cm of snow expected
  • -2°C wind chill-2
    °C wind chill
  • Moderate breeze of 20 kph from the North20
    kph wind from N

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Thunder Bay weather for Saturday 4th April 2026

Expect overcast with light snow in Thunder Bay, Ontario with a maximum temperature of 0°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 10-20 cm of snow expected with 94% chance of some snow and a moderate breeze of 24 kph from the east.

  • 0°C maximum temperature0
    °C maximum temperature
  • -4°C minimum temperature-4
    °C minimum temperature
  • Overcast with light snow
    overcast with light snow
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 94% chance of some snow94
    % chance of some snow
  • 10-20 cm of snow expected<20
    cm of snow expected
  • -6°C wind chill-6
    °C wind chill
  • Moderate breeze of 24 kph from the East24
    kph wind from E

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Thunder Bay weather for Sunday 5th April 2026

Expect clear skies with flurries of snow in Thunder Bay, Ontario with a maximum temperature of 4°C, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 0-2 cm of snow expected with 16% chance of some snow and a moderate breeze of 21 kph from the north-west.

  • 4°C maximum temperature4
    °C maximum temperature
  • -5°C minimum temperature-5
    °C minimum temperature
  • Clear skies with flurries of snow
    clear skies with flurries of snow
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 16% chance of some snow16
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • 0°C wind chill0
    °C wind chill
  • Moderate breeze of 21 kph from the North-West21
    kph wind from NW

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Thunder Bay weather for Monday 6th April 2026

Expect mostly cloudy with light snow in Thunder Bay, Ontario with a maximum temperature of 0°C, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 0-2 cm of snow expected with 44% chance of some snow and a gentle breeze of 19 kph from the north.

  • 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
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 44% chance of some snow44
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -5°C wind chill-5
    °C wind chill
  • Gentle breeze of 19 kph from the North19
    kph wind from N

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

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