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 Tuesday 7th April 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 Tuesday 7th April 2026

Expect scattered clouds in Thunder Bay, Ontario with a maximum temperature of 2°C, maximum UV of 5 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the west.

  • 2°C maximum temperature2
    °C maximum temperature
  • -14°C minimum temperature-14
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • -2°C wind chill-2
    °C wind chill
  • Gentle breeze of 15 kph from the West15
    kph wind from W

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Thunder Bay weather for Wednesday 8th April 2026

Expect cloudy with sleet or snow in Thunder Bay, Ontario with a maximum temperature of 2°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 10-20 mm of sleet/snow expected with 84% chance of some sleet or snow and a gentle breeze of 17 kph from the south-east.

  • 2°C maximum temperature2
    °C maximum temperature
  • -5°C minimum temperature-5
    °C minimum temperature
  • Cloudy with sleet or snow
    cloudy with sleet or snow
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 84% chance of some sleet or snow84
    % chance of some sleet or snow
  • 10-20 mm of sleet/snow expected<20
    mm of sleet/snow expected
  • -2°C wind chill-2
    °C wind chill
  • Gentle breeze of 17 kph from the South-East17
    kph wind from SE

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Thunder Bay weather for Thursday 9th April 2026

Expect mostly cloudy with light snow in Thunder Bay, Ontario with a maximum temperature of 4°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0-2 cm of snow expected with 14% chance of some snow and a moderate breeze of 20 kph from the west.

  • 4°C maximum temperature4
    °C maximum temperature
  • -1°C minimum temperature-1
    °C minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • 4 hours of bright sunshine4
    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
  • 0°C wind chill0
    °C wind chill
  • Moderate breeze of 20 kph from the West20
    kph wind from W

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Thunder Bay weather for Friday 10th April 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 6°C, maximum UV of 3 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the west.

  • 6°C maximum temperature6
    °C maximum temperature
  • -4°C minimum temperature-4
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 4°C wind chill4
    °C wind chill
  • Light breeze of 10 kph from the West10
    kph wind from W

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Thunder Bay weather for Saturday 11th April 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 7°C, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the south.

  • 7°C maximum temperature7
    °C maximum temperature
  • -3°C minimum temperature-3
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 5°C wind chill5
    °C wind chill
  • Light breeze of 11 kph from the South11
    kph wind from S

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

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