A Cold Start, but Warmer Temperatures Ahead
Thunder Bay warms to +7°C today with sunshine, but flurries and freezing drizzle return overnight. Snow midweek, with milder air by Thursday.
Thunder Bay wakes up to mostly cloudy skies and a chilly -10°C this Monday morning. The light southwest wind at 3 km/h brings the wind chill down to -12°C, making it feel just a bit colder. The humidity sits high at 91%, and the barometric pressure is at 101.3 kPa but falling—suggesting some changes are on the horizon. Visibility is excellent at 24 km, so at least there are no issues with morning travel.
The good news? The sun is set to take over today! Skies will clear, and a southeast wind picking up to 20 km/h this morning will help boost temperatures to a high of +7°C—a welcome break from winter’s grip. However, this morning’s wind chill is a brisk -15°C, so don’t let the sunny forecast trick you into underdressing. The UV index will be moderate at 3, so if you’re outdoors for an extended period, a little sunscreen might not be a bad idea.
Tonight: Clear Skies with a Chance of Flurries
The evening starts off clear, but clouds will begin to roll in overnight, bringing a 30% chance of flurries. There’s also a risk of freezing drizzle, so be cautious if you’re out late, as surfaces could become slick. Winds will remain light at up to 15 km/h, with temperatures dropping to -6°C and a wind chill making it feel like -10°C.
Tuesday: Cooler with More Clouds and a Flurry Risk
Tuesday will be mainly cloudy with a 30% chance of flurries. The morning also carries a risk of freezing drizzle, so the roads could be a bit tricky. The north wind at 20 km/h will make it feel colder, with a wind chill of -13°C in the morning. The high will reach +3°C, but it won’t feel as mild as today. The UV index will be low at 2.
By nighttime, snow returns in a more persistent fashion, with periods of snowfall expected. Temperatures will drop to -6°C.
Midweek Outlook: More Snow, Then a Mix of Sun and Cloud
Wednesday will bring steady periods of snow, with a high of -2°C. The night will see cloudy periods and a low of -13°C.
Thursday looks a bit better, with a mix of sun and clouds and a high around 0°C—another small sign that spring is inching closer! By night, a 30% chance of flurries returns, and temperatures will fall to -12°C.
What to Wear?
- Morning: Winter coat, gloves, and a hat—the wind chill of -15°C means you’ll need them.
- Afternoon: Layers! With a high of +7°C, you might even get away with a light jacket.
- Evening: Be prepared for possible freezing drizzle—waterproof footwear with good grip is a smart choice.
Thunder Bay Weather Trivia!
Did you know Thunder Bay’s warmest March 3rd on record was 11.7°C in 1983? Meanwhile, the coldest was -37.8°C in 1962. Compared to that, today’s high of +7°C feels like summer!
