Thunder Bay – Weather – Thunder Bay is waking up under mostly cloudy skies with a light west breeze and a rising barometer—usually a sign the atmosphere is trying to settle down. Even so, it’s still a winter morning that makes you zip up all the way.
Today’s Weather Overview
At 6:00 AM EST, Thunder Bay Airport reported -16.4°C with mostly cloudy skies. The wind is W 6 km/h, producing a wind chill of -21. Humidity is 74%, and visibility is 24 km. Pressure is 102.7 kPa and rising, which supports the “breaks of nicer weather” feel in today’s forecast.
Today
Expect a mix of sun and cloud through the day. Winds stay light (up to 15 km/h), and the temperature climbs to a high near -8°C. It won’t feel that mild early on—wind chill sits near -21 this morning, easing to about -13 this afternoon.
Extended Forecast
Tonight (Tue night): Partly cloudy with a low near -15°C. Wind chill dips to around -19 overnight.
Wednesday, Feb 4: Clearing skies with a high near -9°C. Morning wind chill near -22, improving to around -12 in the afternoon. Wednesday night turns to cloudy periods with a low near -16°C.
Thursday, Feb 5: A bigger shift—snow moves in and the high reaches 0°C. Thursday night stays cloudy with a 60% chance of snow and a low near -17°C.
Wardrobe Recommendations
Today is a “wind-proof matters” day. A warm base layer under an insulated coat will do the job, but don’t skip the hat and mitts—wind chill in the low minus 20s can sting fast during the morning commute. With snow and a near-zero high showing up Thursday, it’s also worth lining up waterproof boots and a warmer outer shell for later in the week.
Weather Trivia
A rising barometer often means calmer weather, but winter doesn’t always play fair: calmer winds can make it feel better outside, even when the temperature stays well below freezing—especially along Lake Superior where cloud and flurries can linger while the larger pattern stabilizes.
Summary
Thunder Bay weather for Tuesday, February 3, 2026: mostly cloudy and -16°C this morning with wind chill near -21 and no alerts in effect. A mix of sun and cloud today (high -8°C), clearing Wednesday, then snow arrives Thursday with a high near 0°C.
