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 Saturday 7th March 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 7th March 2026

Expect clear skies with flurries of snow in Thunder Bay, Ontario with a maximum temperature of 2°C, maximum UV of 3 (Moderate) and 8 hours of bright sunshine. There are 2-5 cm of snow expected with 24% chance of some snow and a gentle breeze of 15 kph from the north-west.

  • 2°C maximum temperature2
    °C maximum temperature
  • -4°C minimum temperature-4
    °C minimum temperature
  • Clear skies with flurries of snow
    clear skies with flurries of snow
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 24% chance of some snow24
    % chance of some snow
  • 2-5 cm of snow expected<5
    cm of snow expected
  • -2°C wind chill-2
    °C wind chill
  • Gentle breeze of 15 kph from the North-West15
    kph wind from NW

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Thunder Bay weather for Sunday 8th March 2026

Expect cloudy with sleet or snow in Thunder Bay, Ontario with a maximum temperature of 6°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0-2 mm of sleet/snow expected with 55% chance of some sleet or snow and a moderate breeze of 23 kph from the west.

  • 6°C maximum temperature6
    °C maximum temperature
  • -2°C minimum temperature-2
    °C minimum temperature
  • Cloudy with sleet or snow
    cloudy with sleet or snow
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 55% chance of some sleet or snow55
    % chance of some sleet or snow
  • 0-2 mm of sleet/snow expected<2
    mm of sleet/snow expected
  • 2°C wind chill2
    °C wind chill
  • Moderate breeze of 23 kph from the West23
    kph wind from W

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Thunder Bay weather for Monday 9th March 2026

Expect clear skies with flurries of snow in Thunder Bay, Ontario with a maximum temperature of 2°C, maximum UV of 2 (Low) and 8 hours of bright sunshine. There are 0-2 cm of snow expected with 14% chance of some snow and a moderate breeze of 24 kph from the west.

  • 2°C maximum temperature2
    °C maximum temperature
  • -7°C minimum temperature-7
    °C minimum temperature
  • Clear skies with flurries of snow
    clear skies with flurries of snow
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 14% chance of some snow14
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -3°C wind chill-3
    °C wind chill
  • Moderate breeze of 24 kph from the West24
    kph wind from W

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Thunder Bay weather for Tuesday 10th March 2026

Expect overcast with light snow in Thunder Bay, Ontario with a maximum temperature of -5°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 0-2 cm of snow expected with 36% chance of some snow and a gentle breeze of 14 kph from the north-east.

  • -5°C maximum temperature-5
    °C maximum temperature
  • -10°C minimum temperature-10
    °C minimum temperature
  • Overcast with light snow
    overcast with light snow
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 36% chance of some snow36
    % 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 14 kph from the North-East14
    kph wind from NE

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Thunder Bay weather for Wednesday 11th March 2026

Expect overcast with light snow in Thunder Bay, Ontario with a maximum temperature of -3°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 0-2 cm of snow expected with 37% chance of some snow and a gentle breeze of 13 kph from the north.

  • -3°C maximum temperature-3
    °C maximum temperature
  • -12°C minimum temperature-12
    °C minimum temperature
  • Overcast with light snow
    overcast with light snow
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 37% chance of some snow37
    % 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 13 kph from the North13
    kph wind from N

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

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