Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be 27°F. Select a day from the live weather forecast for Thunder Bay, Ontario, Canada for more weather parameters.

5-day weather forecast updated at 04:00 on Sunday 15th March 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

Air Canada: Top flight deals to Canada

  • Discover top Air Canada offers on flights to Canada
  • Browse lowest fares available or search by date
  • Book flights to Toronto, Vancouver, Calgary, Montreal & more
Go to Air Canada deal >>

View all Air Canada 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 15th March 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 27°F, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0 cm of snow expected and a fresh breeze of 18 mph from the north-east.

  • 27°F maximum temperature27
    °F maximum temperature
  • 14°F minimum temperature14
    °F 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
  • 14°F wind chill14
    °F wind chill
  • Fresh breeze of 18 mph from the North-East18
    mph wind from NE

Back to top

Thunder Bay weather for Monday 16th March 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 14°F, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0 cm of snow expected and a fresh breeze of 20 mph from the north.

  • 14°F maximum temperature14
    °F maximum temperature
  • 5°F minimum temperature5
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 0 cm of snow expected0
    cm of snow expected
  • -4°F wind chill-4
    °F wind chill
  • Fresh breeze of 20 mph from the North20
    mph wind from N

Back to top

Thunder Bay weather for Tuesday 17th March 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 18°F, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 11 mph from the north-west.

  • 18°F maximum temperature18
    °F maximum temperature
  • -2°F minimum temperature-2
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 0 cm of snow expected0
    cm of snow expected
  • 5°F wind chill5
    °F wind chill
  • Gentle breeze of 11 mph from the North-West11
    mph wind from NW

Back to top

Thunder Bay weather for Wednesday 18th March 2026

Expect mostly cloudy with light snow in Thunder Bay, Ontario with a maximum temperature of 30°F, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 2-5 cm of snow expected with 49% chance of some snow and a gentle breeze of 8 mph from the south-west.

  • 30°F maximum temperature30
    °F maximum temperature
  • 14°F minimum temperature14
    °F 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)
  • 49% chance of some snow49
    % chance of some snow
  • 2-5 cm of snow expected<5
    cm of snow expected
  • 23°F wind chill23
    °F wind chill
  • Gentle breeze of 8 mph from the South-West8
    mph wind from SW

Back to top

Thunder Bay weather for Thursday 19th March 2026

Expect mostly cloudy with light snow in Thunder Bay, Ontario with a maximum temperature of 39°F, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0-2 cm of snow expected with 43% chance of some snow and a light breeze of 7 mph from the north-west.

  • 39°F maximum temperature39
    °F maximum temperature
  • 23°F minimum temperature23
    °F minimum temperature
  • Mostly cloudy with light snow
    mostly cloudy with light snow
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 43% chance of some snow43
    % chance of some snow
  • 0-2 cm of snow expected<2
    cm of snow expected
  • 36°F wind chill36
    °F wind chill
  • Light breeze of 7 mph from the North-West7
    mph wind from NW

Back to top

Canadian Affair: Latest special offers on holidays

  • Save on holidays to Canada with top deals & discounts
  • Book holidays, cruises, ski breaks & tours to Canada
  • Offers include discounts, upgrades & more
Go to Canadian Affair deal >>

View all Canadian Affair 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 ^