Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be 17°C. Select a day from the live weather forecast for Thunder Bay, Ontario, Canada for more weather parameters.

  • Saturday
    24th Oct
    Mostly cloudy with light rain (0-2 mm of rainfall expected)
  • Sunday
    25th Oct
    Broken clouds
  • Monday
    26th Oct
    Broken clouds
  • Tuesday
    27th Oct
    Mostly cloudy with light rain (2-5 mm of rainfall expected)
  • Wednesday
    28th Oct
    Cloudy with some rain (10-20 mm of rainfall expected)

5-day weather forecast updated at 04:00 on Saturday 24th October 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 Saturday 24th October 2026

Expect mostly cloudy with light rain in Thunder Bay, Ontario with a maximum temperature of 17°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 49% chance of some rain and a gentle breeze of 16 kph from the south.

  • 17°C maximum temperature17
    °C maximum temperature
  • 7°C minimum temperature7
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 49% chance of some rain49
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 16 kph from the South16
    kph wind from S

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Thunder Bay weather for Sunday 25th October 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 13°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the west.

  • 13°C maximum temperature13
    °C maximum temperature
  • 1°C minimum temperature1
    °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 mm of rainfall expected0
    mm of rainfall expected
  • 13°C wind chill13
    °C wind chill
  • Gentle breeze of 17 kph from the West17
    kph wind from W

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Thunder Bay weather for Monday 26th October 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 7°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north-west.

  • 7°C maximum temperature7
    °C maximum temperature
  • -2°C minimum temperature-2
    °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 mm of rainfall expected0
    mm of rainfall expected
  • 5°C wind chill5
    °C wind chill
  • Light breeze of 11 kph from the North-West11
    kph wind from NW

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Thunder Bay weather for Tuesday 27th October 2026

Expect mostly cloudy with light rain in Thunder Bay, Ontario with a maximum temperature of 8°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 61% chance of some rain and a gentle breeze of 15 kph from the south-east.

  • 8°C maximum temperature8
    °C maximum temperature
  • -2°C minimum temperature-2
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 61% chance of some rain61
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • 6°C wind chill6
    °C wind chill
  • Gentle breeze of 15 kph from the South-East15
    kph wind from SE

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Thunder Bay weather for Wednesday 28th October 2026

Expect cloudy with some rain in Thunder Bay, Ontario with a maximum temperature of 12°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 77% chance of some rain and a gentle breeze of 14 kph from the south-east.

  • 12°C maximum temperature12
    °C maximum temperature
  • 4°C minimum temperature4
    °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)
  • 77% chance of some rain77
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • 12°C wind chill12
    °C wind chill
  • Gentle breeze of 14 kph from the South-East14
    kph wind from SE

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