Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be -8°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 Sunday 4th January 2026 GMT

More about Thunder Bay

Thunder Bay by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Ontario

British Airways: The Original Sale is now on

  • Save on holidays & flights worldwide in the BA sale
  • Book trips to Europe, USA, Caribbean & beyond
  • Including New York, Los Angeles, Florida, Barbados & Dubai
Go to British Airways deal >>

Expires at 23:59 on Tuesday 27th Jan 2026 · View all British Airways offers

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 4th January 2026

Expect mostly cloudy with light snow in Thunder Bay, Ontario with a maximum temperature of -8°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 2-5 cm of snow expected with 99% chance of some snow and a light breeze of 10 kph from the east.

  • -8°C maximum temperature-8
    °C maximum temperature
  • -18°C minimum temperature-18
    °C minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 99% chance of some snow99
    % chance of some snow
  • 2-5 cm of snow expected<5
    cm of snow expected
  • -12°C wind chill-12
    °C wind chill
  • Light breeze of 10 kph from the East10
    kph wind from E

Back to top

Thunder Bay weather for Monday 5th January 2026

Expect mostly cloudy with light snow in Thunder Bay, Ontario with a maximum temperature of -4°C and 1 hour of bright sunshine. There are 0-2 cm of snow expected with 18% chance of some snow and a light breeze of 8 kph from the north.

  • -4°C maximum temperature-4
    °C maximum temperature
  • -8°C minimum temperature-8
    °C minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • 1 hour of bright sunshine1
    hour of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 18% chance of some snow18
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -7°C wind chill-7
    °C wind chill
  • Light breeze of 8 kph from the North8
    kph wind from N

Back to top

Thunder Bay weather for Tuesday 6th January 2026

Expect overcast with light snow in Thunder Bay, Ontario with a maximum temperature of -1°C and no hours of bright sunshine. There are 0-2 cm of snow expected with 29% chance of some snow and a light breeze of 7 kph from the west.

  • -1°C maximum temperature-1
    °C maximum temperature
  • -6°C minimum temperature-6
    °C minimum temperature
  • Overcast with light snow
    overcast with light snow
  • No hours of bright sunshine0
    hours of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 29% chance of some snow29
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -4°C wind chill-4
    °C wind chill
  • Light breeze of 7 kph from the West7
    kph wind from W

Back to top

Thunder Bay weather for Wednesday 7th January 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of -1°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 7 kph from the south-west.

  • -1°C maximum temperature-1
    °C maximum temperature
  • -6°C minimum temperature-6
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 cm of snow expected0
    cm of snow expected
  • -4°C wind chill-4
    °C wind chill
  • Light breeze of 7 kph from the South-West7
    kph wind from SW

Back to top

Thunder Bay weather for Thursday 8th January 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 2°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the west.

  • 2°C maximum temperature2
    °C maximum temperature
  • -4°C minimum temperature-4
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • -1°C wind chill-1
    °C wind chill
  • Light breeze of 9 kph from the West9
    kph wind from W

Back to top

Travelbag: up to 50% off 2026 holidays

  • Save up to 50% on 2026 holidays & tours with Travelbag
  • Book selected stays in popular destinations around the world
  • Travel before 31st December 2026 (inclusive)
Go to Travelbag deal >>

Expires at 23:59 on Saturday 31st Jan 2026 · View all Travelbag offers

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

Back to top

More about Ontario

Related posts

Popular travel offers

Explore holiday destinations

More holidays

Save with latest deals & discounts

More deals

Airport parking

More parking

Airport lounges

More lounges

Top ^