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 Monday 23rd 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 Monday 23rd 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 9 hours of bright sunshine. There are 0-2 cm of snow expected with 15% chance of some snow and a gentle breeze of 18 kph from the west.

  • 2°C maximum temperature2
    °C maximum temperature
  • -9°C minimum temperature-9
    °C minimum temperature
  • Clear skies with flurries of snow
    clear skies with flurries of snow
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 15% chance of some snow15
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -2°C wind chill-2
    °C wind chill
  • Gentle breeze of 18 kph from the West18
    kph wind from W

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Thunder Bay weather for Tuesday 24th March 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 2°C, maximum UV of 3 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the west.

  • 2°C maximum temperature2
    °C maximum temperature
  • -5°C minimum temperature-5
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • -2°C wind chill-2
    °C wind chill
  • Gentle breeze of 14 kph from the West14
    kph wind from W

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Thunder Bay weather for Wednesday 25th March 2026

Expect mostly cloudy with light snow in Thunder Bay, Ontario with a maximum temperature of 0°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 2-5 cm of snow expected with 53% chance of some snow and a gentle breeze of 13 kph from the north-east.

  • 0°C maximum temperature0
    °C maximum temperature
  • -6°C minimum temperature-6
    °C minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 53% chance of some snow53
    % chance of some snow
  • 2-5 cm of snow expected<5
    cm of snow expected
  • -5°C wind chill-5
    °C wind chill
  • Gentle breeze of 13 kph from the North-East13
    kph wind from NE

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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 9 hours of bright sunshine. There are 2-5 cm of snow expected with 82% chance of some snow and a gentle breeze of 16 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
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 82% chance of some snow82
    % chance of some snow
  • 2-5 cm of snow expected<5
    cm of snow expected
  • -7°C wind chill-7
    °C wind chill
  • Gentle breeze of 16 kph from the North16
    kph wind from N

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Thunder Bay weather for Friday 27th March 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of -2°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 18 kph from the west.

  • -2°C maximum temperature-2
    °C maximum temperature
  • -16°C minimum temperature-16
    °C minimum temperature
  • Broken clouds
    broken clouds
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 0 cm of snow expected0
    cm of snow expected
  • -8°C wind chill-8
    °C wind chill
  • Gentle breeze of 18 kph from the West18
    kph wind from W

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  • Book selected stays in popular destinations around the world
  • Travel before 31st December 2026 (inclusive)
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Metric (°C / mm)  |  Imperial (°F / inches)

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