Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be -14°C. Select a day from the live weather forecast for Thunder Bay, Ontario, Canada for more weather parameters.

5-day weather forecast updated at 04:01 on Monday 23rd 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 Monday 23rd February 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of -14°C, maximum UV of 2 (Low) and 6 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 15 kph from the north.

  • -14°C maximum temperature-14
    °C maximum temperature
  • -22°C minimum temperature-22
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 0 cm of snow expected0
    cm of snow expected
  • -22°C wind chill-22
    °C wind chill
  • Gentle breeze of 15 kph from the North15
    kph wind from N

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Thunder Bay weather for Tuesday 24th February 2026

Expect cloudy with some snow in Thunder Bay, Ontario with a maximum temperature of -6°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 10-20 cm of snow expected with 100% chance of some snow and a moderate breeze of 21 kph from the south-east.

  • -6°C maximum temperature-6
    °C maximum temperature
  • -15°C minimum temperature-15
    °C minimum temperature
  • Cloudy with some snow
    cloudy with some snow
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 100% chance of some snow100
    % chance of some snow
  • 10-20 cm of snow expected<20
    cm of snow expected
  • -12°C wind chill-12
    °C wind chill
  • Moderate breeze of 21 kph from the South-East21
    kph wind from SE

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Thunder Bay weather for Wednesday 25th February 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of -10°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0 cm of snow expected and a moderate breeze of 20 kph from the north-west.

  • -10°C maximum temperature-10
    °C maximum temperature
  • -18°C minimum temperature-18
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 0 cm of snow expected0
    cm of snow expected
  • -18°C wind chill-18
    °C wind chill
  • Moderate breeze of 20 kph from the North-West20
    kph wind from NW

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Thunder Bay weather for Thursday 26th February 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of -7°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 10 kph from the south.

  • -7°C maximum temperature-7
    °C maximum temperature
  • -21°C minimum temperature-21
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 cm of snow expected0
    cm of snow expected
  • -11°C wind chill-11
    °C wind chill
  • Light breeze of 10 kph from the South10
    kph wind from S

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Thunder Bay weather for Friday 27th 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 4 hours of bright sunshine. There are 0-2 cm of snow expected with 45% chance of some snow and a moderate breeze of 23 kph from the west.

  • 2°C maximum temperature2
    °C maximum temperature
  • -10°C minimum temperature-10
    °C minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 45% chance of some snow45
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -4°C wind chill-4
    °C wind chill
  • Moderate breeze of 23 kph from the West23
    kph wind from W

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

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