Thunder Bay weather forecast

Last updated at 04:02 on Monday 20th March 2023 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.

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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 20th March 2023

Below is the Thunder Bay weather forecast for Monday 20th March 2023. Expect scattered clouds in Thunder Bay, Ontario with a maximum temperature of -4°C, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 16 kph from the north.

  • -4°C maximum temperature-4
    °C maximum temperature
  • -12°C minimum temperature-12
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 11 hours of bright sunshine11
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 0 cm of snow expected0
    cm of snow expected
  • -10°C wind chill-10
    °C wind chill
  • Gentle breeze of 16 kph from the North16
    kph wind from N

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Thunder Bay weather for Tuesday 21st March 2023

Below is the Thunder Bay weather forecast for Tuesday 21st March 2023. Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of -5°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0 cm of snow expected and a moderate breeze of 25 kph from the east.

  • -5°C maximum temperature-5
    °C maximum temperature
  • -15°C minimum temperature-15
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 0 cm of snow expected0
    cm of snow expected
  • -12°C wind chill-12
    °C wind chill
  • Moderate breeze of 25 kph from the East25
    kph wind from E

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Thunder Bay weather for Wednesday 22nd March 2023

Below is the Thunder Bay weather forecast for Wednesday 22nd March 2023. Expect cloudy with some snow in Thunder Bay, Ontario with a maximum temperature of 1°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 10-20 cm of snow expected with 99% chance of some snow and a fresh breeze of 29 kph from the east.

  • 1°C maximum temperature1
    °C maximum temperature
  • -6°C minimum temperature-6
    °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)
  • 99% chance of some snow99
    % chance of some snow
  • 10-20 cm of snow expected<20
    cm of snow expected
  • -5°C wind chill-5
    °C wind chill
  • Fresh breeze of 29 kph from the East29
    kph wind from E

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Thunder Bay weather for Thursday 23rd March 2023

Below is the Thunder Bay weather forecast for Thursday 23rd March 2023. Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 1°C, maximum UV of 4 (Moderate) and no hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 24 kph from the north-west.

  • 1°C maximum temperature1
    °C maximum temperature
  • -10°C minimum temperature-10
    °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 mm of rainfall expected0
    mm of rainfall expected
  • -5°C wind chill-5
    °C wind chill
  • Moderate breeze of 24 kph from the North-West24
    kph wind from NW

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Thunder Bay weather for Friday 24th March 2023

Below is the Thunder Bay weather forecast for Friday 24th March 2023. Expect clear skies in Thunder Bay, Ontario with a maximum temperature of 2°C, maximum UV of 3 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south.

  • 2°C maximum temperature2
    °C maximum temperature
  • -12°C minimum temperature-12
    °C minimum temperature
  • Clear skies
    clear skies
  • 12 hours of bright sunshine12
    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 South14
    kph wind from S

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

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