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 26th 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 Thursday 26th March 2026

Expect clear skies with flurries of snow in Thunder Bay, Ontario with a maximum temperature of -2°C, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 0-2 cm of snow expected with 8% chance of some snow and a gentle breeze of 14 kph from the north.

  • -2°C maximum temperature-2
    °C maximum temperature
  • -9°C minimum temperature-9
    °C minimum temperature
  • Clear skies with flurries of snow
    clear skies with flurries of snow
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 8% chance of some snow8
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -7°C wind chill-7
    °C wind chill
  • Gentle breeze of 14 kph from the North14
    kph wind from N

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Thunder Bay weather for Friday 27th March 2026

Expect mostly cloudy with light snow in Thunder Bay, Ontario with a maximum temperature of -4°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 0-2 cm of snow expected with 6% chance of some snow and a gentle breeze of 19 kph from the north-west.

  • -4°C maximum temperature-4
    °C maximum temperature
  • -12°C minimum temperature-12
    °C minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 6% chance of some snow6
    % 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 19 kph from the North-West19
    kph wind from NW

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Thunder Bay weather for Saturday 28th March 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 0°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 13 kph from the west.

  • 0°C maximum temperature0
    °C maximum temperature
  • -13°C minimum temperature-13
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 0 cm of snow expected0
    cm of snow expected
  • -4°C wind chill-4
    °C wind chill
  • Gentle breeze of 13 kph from the West13
    kph wind from W

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Thunder Bay weather for Sunday 29th March 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 2°C, maximum UV of 2 (Low) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the north.

  • 2°C maximum temperature2
    °C maximum temperature
  • -12°C minimum temperature-12
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • -1°C wind chill-1
    °C wind chill
  • Light breeze of 9 kph from the North9
    kph wind from N

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Thunder Bay weather for Monday 30th March 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 3°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the north-west.

  • 3°C maximum temperature3
    °C maximum temperature
  • -5°C minimum temperature-5
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 0°C wind chill0
    °C wind chill
  • Gentle breeze of 14 kph from the North-West14
    kph wind from NW

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

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