Thunder Bay Weather Desk Morning Snapshot
Thunder Bay – Weather – Thunder Bay is starting the day with light snow and -5°C (measured -4.7°C) at 5:00 AM EST. It’s a damp cold: 94% humidity with visibility reduced to 8 km.
Barometric pressure is 101.1 kPa and falling, suggesting the unsettled pattern isn’t done with us yet. Winds are light from the west at 7 km/h, giving a wind chill of -8—not extreme, but the moisture makes it feel extra clingy.
Today: Snow Ends This Morning, Flurries Possible, Wind Ramps Up
Periods of snow are expected to end this morning, then skies stay cloudy with a 40% chance of flurries. There’s also a risk of freezing drizzle early this morning, so watch for sneaky slick spots on bridges, intersections, and sidewalks.
The other big story is the wind: it becomes west 30 km/h gusting to 50 km/h. Temperatures top out near -2°C, but it will feel colder with the wind—wind chill around -7 this morning and dropping to about -16 this afternoon as the breeze strengthens.
Wardrobe call
Go windproof today. A warm base layer, insulated coat, mitts, and a hat that actually covers your ears will win. If you’re walking, grippy boots help a lot with that early drizzle risk. If you’re driving, keep the windshield washer fluid topped up—spray + slush is a classic Thunder Bay combo.
Tonight: Clear-ish Skies, Bigger Cold
Tonight turns partly cloudy, becoming cloudier toward morning. Winds ease early in the evening, but the temperature doesn’t: low near -18°C, with wind chill around -14 this evening and near -22 overnight.
Christmas Eve and Christmas Day
Wednesday, Dec 24
Wednesday stays cloudy with a 30% chance of flurries in the morning. High around -3°C. Wind chill runs near -20 in the morning, improving to around -5 by afternoon.
Thursday, Dec 25
Christmas Day is cloudy with a 40% chance of snow, high near -10°C. Thursday night brings periods of snow with temperatures holding around -10°C.
Friday: More Snow and a Little Milder
Friday continues with periods of snow, with a high near -2°C, then Friday night gives a 30% chance of flurries and a low around -3°C.
Travel note
Today’s main hazards are early freezing drizzle (invisible slick) and gusty west winds (blowing snow and reduced visibility in open areas). Tonight’s sharp drop means anything wet can freeze up fast—so expect icy patches to redecorate the roads while you’re sleeping.
Weather trivia
Thunder Bay can swing from “mild-ish and wet” to “deep-freeze” quickly when winds shift and skies clear—Lake Superior moderates temps… right up until it doesn’t.
Last Word on the Weather:
Thunder Bay: light snow ends this morning, freezing drizzle risk early, then gusty west winds. High -2, but plunging to -18 tonight. Snow chances return by Christmas.
