Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be 10°F. 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 Saturday 6th December 2025 GMT

More about Thunder Bay

Thunder Bay by month

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

Recommended for Ontario

Auto Europe: Guranteed best rates on car rentals

  • Book car hire with the best rate gurantee
  • Find a cheaper rate Auto Europe will beat it
  • Browse car rentals across the USA & beyond
Go to Auto Europe deal >>

View all Auto Europe 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 Saturday 6th December 2025

Expect clear skies with flurries of snow in Thunder Bay, Ontario with a maximum temperature of 10°F, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0-2 cm of snow expected with 25% chance of some snow and a gentle breeze of 11 mph from the north-west.

  • 10°F maximum temperature10
    °F maximum temperature
  • 3°F minimum temperature3
    °F minimum temperature
  • Clear skies with flurries of snow
    clear skies with flurries of snow
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 25% chance of some snow25
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -2°F wind chill-2
    °F wind chill
  • Gentle breeze of 11 mph from the North-West11
    mph wind from NW

Back to top

Thunder Bay weather for Sunday 7th December 2025

Expect clear skies with flurries of snow in Thunder Bay, Ontario with a maximum temperature of 10°F, maximum UV of 1 (Low) and 9 hours of bright sunshine. There are 0-2 cm of snow expected with 2% chance of some snow and a gentle breeze of 9 mph from the north-west.

  • 10°F maximum temperature10
    °F maximum temperature
  • -0°F minimum temperature0
    °F minimum temperature
  • Clear skies with flurries of snow
    clear skies with flurries of snow
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 2% chance of some snow2
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • -4°F wind chill-4
    °F wind chill
  • Gentle breeze of 9 mph from the North-West9
    mph wind from NW

Back to top

Thunder Bay weather for Monday 8th December 2025

Expect mostly cloudy with light snow in Thunder Bay, Ontario with a maximum temperature of 19°F and 2 hours of bright sunshine. There are 2-5 cm of snow expected with 59% chance of some snow and a light breeze of 7 mph from the south-west.

  • 19°F maximum temperature19
    °F maximum temperature
  • -0°F minimum temperature0
    °F minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • 2 hours of bright sunshine2
    hours of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 59% chance of some snow59
    % chance of some snow
  • 2-5 cm of snow expected<5
    cm of snow expected
  • 10°F wind chill10
    °F wind chill
  • Light breeze of 7 mph from the South-West7
    mph wind from SW

Back to top

Thunder Bay weather for Tuesday 9th December 2025

Expect clear skies with flurries of snow in Thunder Bay, Ontario with a maximum temperature of 21°F, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0-2 cm of snow expected with 40% chance of some snow and a light breeze of 7 mph from the north-west.

  • 21°F maximum temperature21
    °F maximum temperature
  • 14°F minimum temperature14
    °F minimum temperature
  • Clear skies with flurries of snow
    clear skies with flurries of snow
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 40% chance of some snow40
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • 12°F wind chill12
    °F wind chill
  • Light breeze of 7 mph from the North-West7
    mph wind from NW

Back to top

Thunder Bay weather for Wednesday 10th December 2025

Expect mostly cloudy with light snow in Thunder Bay, Ontario with a maximum temperature of 14°F and 3 hours of bright sunshine. There are 0-2 cm of snow expected with 17% chance of some snow and a gentle breeze of 9 mph from the north.

  • 14°F maximum temperature14
    °F maximum temperature
  • 3°F minimum temperature3
    °F minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • 3 hours of bright sunshine3
    hours of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 17% chance of some snow17
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • 1°F wind chill1
    °F wind chill
  • Gentle breeze of 9 mph from the North9
    mph wind from N

Back to top

Marriott discount code: up to 20% off hotel stays

  • Save up to 20% when you book long stays with Marriott
  • 20% off - 4-6 nights, 15% off 3 nights
  • Book hotels in Europe, the Middle East & Africa
Show discount codeShow discount code ******UK8
Redeem Marriott discount code >>

View all Marriott offers

Metric (°C)  |  Imperial (°F)

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 ^