Thunder Bay weather live forecast

Today's maximum temperature in Thunder Bay is expected to be -4°C. Select a day from the live weather forecast for Thunder Bay, Ontario, Canada for more weather parameters.

5-day weather forecast updated at 04:00 on Tuesday 10th 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

Newmarket Holidays: up to 15% off ALL tours

  • Save 15% on ALL tours in 2026, 2027 & 2028
  • Filter tour deals by destination, price & more
  • Travel before 31st December 2028 (inclusive)
Go to Newmarket Holidays deal >>

Expires at 23:59 on Friday 13th Mar 2026 · View all Newmarket Holidays 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 Tuesday 10th March 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of -4°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 11 kph from the east.

  • -4°C maximum temperature-4
    °C maximum temperature
  • -8°C minimum temperature-8
    °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 cm of snow expected0
    cm of snow expected
  • -8°C wind chill-8
    °C wind chill
  • Light breeze of 11 kph from the East11
    kph wind from E

Back to top

Thunder Bay weather for Wednesday 11th March 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of 1°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the north.

  • 1°C maximum temperature1
    °C maximum temperature
  • -8°C minimum temperature-8
    °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
  • -4°C wind chill-4
    °C wind chill
  • Gentle breeze of 15 kph from the North15
    kph wind from N

Back to top

Thunder Bay weather for Thursday 12th March 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of -3°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 18 kph from the east.

  • -3°C maximum temperature-3
    °C maximum temperature
  • -12°C minimum temperature-12
    °C 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
  • -9°C wind chill-9
    °C wind chill
  • Gentle breeze of 18 kph from the East18
    kph wind from E

Back to top

Thunder Bay weather for Friday 13th March 2026

Expect mostly cloudy with snow in Thunder Bay, Ontario with a maximum temperature of -3°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 5-10 cm of snow expected with 40% chance of some snow and a moderate breeze of 23 kph from the north-west.

  • -3°C maximum temperature-3
    °C maximum temperature
  • -9°C minimum temperature-9
    °C minimum temperature
  • Mostly cloudy with snow
    mostly cloudy with snow
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 40% chance of some snow40
    % chance of some snow
  • 5-10 cm of snow expected<10
    cm of snow expected
  • -9°C wind chill-9
    °C wind chill
  • Moderate breeze of 23 kph from the North-West23
    kph wind from NW

Back to top

Thunder Bay weather for Saturday 14th March 2026

Expect broken clouds in Thunder Bay, Ontario with a maximum temperature of -4°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 16 kph from the north-west.

  • -4°C maximum temperature-4
    °C maximum temperature
  • -15°C minimum temperature-15
    °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 cm of snow expected0
    cm of snow expected
  • -9°C wind chill-9
    °C wind chill
  • Gentle breeze of 16 kph from the North-West16
    kph wind from NW

Back to top

Crystal Ski: up to £320pp off last minute ski breaks

  • Save up to £320 per person on last minute skiing holidays
  • Book late skiing holiday deals to Europe & North America
  • Filter deals by destination, board basis, rating, travel dates
Go to Crystal Ski deal >>

View all Crystal Ski 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 ^