Thunder Bay Weather: Chilly Start, Blustery Winds, and a Few Flurries

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Sunrise Thunder Bay Ontario
Good morning, Thunder Bay!

Cold Morning with Increasing Clouds and Winds

Thunder Bay sees strong winds up to 60 km/h today, a chance of flurries, and a wind chill of -19°C. Warmer weather arrives by Sunday. Stay bundled up!

Thunder Bay is off to a frigid start this morning, with a temperature of -14.1°C and a wind chill making it feel like -21°C. The partly cloudy skies may look deceivingly calm, but don’t be fooled—winds will be picking up as the day goes on, bringing a 40% chance of afternoon flurries. If you’re heading out, bundle up and brace for some gusty conditions!

If Wednesday’s winds were not enough, making the snow feel like ice crystal bullets on your face, well, get ready for today. Or make light of it, and tie a kite string to your small children?


Current Conditions in Thunder Bay

As of 8:00 AM EST at Thunder Bay Airport, the humidity is at 80%, and the barometric pressure is 100.8 kPa and rising. Winds are currently from the west-southwest at 13 km/h, but that’s just the beginning of today’s wind story. Visibility is excellent at 32 km, but the increasing cloud cover may make it feel a little gloomier as the day progresses.


Thursday’s Forecast: Strong Winds and a Flurry Risk

Cloud cover will increase through the morning, with a 40% chance of flurries this afternoon. The real kicker today? Strong northwest winds arriving by late morning at 30 km/h, gusting to 60 km/h. While the high is expected to reach 0°C, the wind chill will hover near -19°C this morning, making it feel much colder than the numbers suggest.


Tonight: Gusty Winds Easing, Cold Overnight

Tonight, mainly cloudy skies will dominate, with a 30% chance of flurries early in the evening. The northwest winds at 30 km/h, gusting to 60 km/h, will finally start to calm down late in the evening. Temperatures will dip to -10°C, with the wind chill sitting at -17°C overnight.


Looking Ahead: A Sunny but Chilly Weekend

  • Friday, March 7: Sunny morning, turning into a mix of sun and cloud with a 40% chance of afternoon flurries. Winds will be light, becoming northwest at 20 km/h later in the day. The high will be -6°C, but the wind chill will make it feel like -16°C.

    • Friday Night: Clear and cold, low of -19°C.
  • Saturday, March 8: Sunny with a high of 0°C—finally hitting the freezing mark!

    • Saturday Night: Cloudy periods, low of -9°C.
  • Sunday, March 9: A mix of sun and cloud with a 30% chance of flurries, high of +5°C—the warmest day in the forecast!

    • Sunday Night: Clear skies, low of -9°C.

Historic Weather for March 6

Thunder Bay has seen some wild temperature swings on this date. The warmest March 6 ever recorded was 8.3°C, while the coldest bottomed out at -34.4°C. While today’s -14°C may feel rough, at least we’re nowhere near record-breaking cold!


What to Wear?

  • Morning & Afternoon: Heavy winter coat, hat, gloves, and scarf—the wind chill of -19°C will make it feel much colder.
  • Evening & Overnight: Dress in layers—with a wind chill of -17°C overnight, frostbite could still be a concern with prolonged exposure.

Weather Trivia: Thunder Bay’s Windy Side

Did you know? Thunder Bay once recorded a gust of 113 km/h in a winter storm! While today’s gusts won’t be that extreme, at 60 km/h, they’re still strong enough to send garbage bins rolling and make walking an adventure!

Stay warm, hold onto your hats, and watch out for those icy gusts!

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