Thunder Bay weather live forecast

Tomorrow's maximum temperature in Thunder Bay is expected to be 8°C.

  • Sunday
    28th Apr
    Broken clouds
  • Monday
    29th Apr
    Cloudy with some rain (20-30 mm of rainfall expected)
  • Tuesday
    30th Apr
    Mostly cloudy with light rain (2-5 mm of rainfall expected)
  • Wednesday
    1st May
    Mostly cloudy with rain (10-20 mm of rainfall expected)
  • Thursday
    2nd May
    Overcast skies

5-day weather forecast updated at 04:00 on Sunday 28th April 2024 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 Sunday 28th April 2024

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 8°C, maximum UV of 6 (High) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 26 kph from the east.

  • 8°C maximum temperature8
    °C maximum temperature
  • -1°C minimum temperature-1
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 4°C wind chill4
    °C wind chill
  • Moderate breeze of 26 kph from the East26
    kph wind from E

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Thunder Bay weather for Monday 29th April 2024

Expect cloudy with some rain in Thunder Bay, Ontario with a maximum temperature of 4°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 20-30 mm of rainfall expected with 98% chance of some rain and a fresh breeze of 31 kph from the east.

  • 4°C maximum temperature4
    °C maximum temperature
  • 0°C minimum temperature0
    °C minimum temperature
  • Cloudy with some rain
    cloudy with some rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 98% chance of some rain98
    % chance of some rain
  • 20-30 mm of rainfall expected<30
    mm of rainfall expected
  • -1°C wind chill-1
    °C wind chill
  • Fresh breeze of 31 kph from the East31
    kph wind from E

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Thunder Bay weather for Tuesday 30th April 2024

Expect mostly cloudy with light rain in Thunder Bay, Ontario with a maximum temperature of 11°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 48% chance of some rain and a light breeze of 12 kph from the west.

  • 11°C maximum temperature11
    °C maximum temperature
  • 2°C minimum temperature2
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 48% chance of some rain48
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • 11°C wind chill11
    °C wind chill
  • Light breeze of 12 kph from the West12
    kph wind from W

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Thunder Bay weather for Wednesday 1st May 2024

Expect mostly cloudy with rain in Thunder Bay, Ontario with a maximum temperature of 16°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 39% chance of some rain and a moderate breeze of 22 kph from the west.

  • 16°C maximum temperature16
    °C maximum temperature
  • 3°C minimum temperature3
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 39% chance of some rain39
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • 16°C wind chill16
    °C wind chill
  • Moderate breeze of 22 kph from the West22
    kph wind from W

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Thunder Bay weather for Thursday 2nd May 2024

Expect overcast skies in Thunder Bay, Ontario with a maximum temperature of 13°C, maximum UV of 5 (Moderate) and no hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north.

  • 13°C maximum temperature13
    °C maximum temperature
  • 4°C minimum temperature4
    °C minimum temperature
  • Overcast skies
    overcast skies
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 11 kph from the North11
    kph wind from N

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  • Find lowest fares on flights to Canada, USA & beyond
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Metric (°C / mm)  |  Imperial (°F / inches)

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