Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be 3°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 Friday 27th 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 Friday 27th February 2026

Expect cloudy with sleet or snow in Thunder Bay, Ontario with a maximum temperature of 3°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0-2 mm of sleet/snow expected with 31% chance of some sleet or snow and a fresh breeze of 34 kph from the west.

  • 3°C maximum temperature3
    °C maximum temperature
  • -15°C minimum temperature-15
    °C minimum temperature
  • Cloudy with sleet or snow
    cloudy with sleet or snow
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 31% chance of some sleet or snow31
    % chance of some sleet or snow
  • 0-2 mm of sleet/snow expected<2
    mm of sleet/snow expected
  • -3°C wind chill-3
    °C wind chill
  • Fresh breeze of 34 kph from the West34
    kph wind from W

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Thunder Bay weather for Saturday 28th February 2026

Expect scattered clouds in Thunder Bay, Ontario with a maximum temperature of -14°C, maximum UV of 2 (Low) and 8 hours of bright sunshine. There are 0 cm of snow expected and a moderate breeze of 23 kph from the north-west.

  • -14°C maximum temperature-14
    °C maximum temperature
  • -23°C minimum temperature-23
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 0 cm of snow expected0
    cm of snow expected
  • -24°C wind chill-24
    °C wind chill
  • Moderate breeze of 23 kph from the North-West23
    kph wind from NW

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Thunder Bay weather for Sunday 1st March 2026

Expect scattered clouds in Thunder Bay, Ontario with a maximum temperature of -12°C, maximum UV of 2 (Low) and 7 hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 9 kph from the north-west.

  • -12°C maximum temperature-12
    °C maximum temperature
  • -27°C minimum temperature-27
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 0 cm of snow expected0
    cm of snow expected
  • -17°C wind chill-17
    °C wind chill
  • Light breeze of 9 kph from the North-West9
    kph wind from NW

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Thunder Bay weather for Monday 2nd March 2026

Expect mostly cloudy 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 22% chance of some snow and a gentle breeze of 18 kph from the south-west.

  • -3°C maximum temperature-3
    °C maximum temperature
  • -18°C minimum temperature-18
    °C minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 22% chance of some snow22
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -9°C wind chill-9
    °C wind chill
  • Gentle breeze of 18 kph from the South-West18
    kph wind from SW

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Thunder Bay weather for Tuesday 3rd March 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 0°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 12 kph from the west.

  • 0°C maximum temperature0
    °C maximum temperature
  • -9°C minimum temperature-9
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 0 cm of snow expected0
    cm of snow expected
  • -3°C wind chill-3
    °C wind chill
  • Light breeze of 12 kph from the West12
    kph wind from W

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

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