Thunder Bay – Weather = Thunder Bay is back in full winter mode this morning. A brisk north wind is driving wind chills, and while skies will brighten later today, it won’t feel mild. The good news: a pattern shift midweek brings a jump toward (and above) freezing, with snow returning Tuesday night and a mixed bag later Wednesday.
Current Conditions (Observed 9:00 AM EDT, Monday March 16, 2026)
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Condition: Mostly cloudy
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Temperature: -14.5°C (headline: -15°C)
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Wind: NNE 20 km/h, gusting 37 km/h
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Wind Chill: -24
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Pressure: 101.7 kPa, falling
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Humidity: 43%
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Dew Point: -24.4°C
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Visibility: 32 km
Today (Monday)
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Sky: A mix of sun and cloud, clearing this afternoon
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Wind: North 30 km/h gusting to 60 (strong and biting)
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High: -10°C
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Wind chill: -27 this morning, near -20 this afternoon
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UV Index: 2 (Low)
Expected Conditions (Next Three Days)
Tonight (Monday Night)
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Sky: Partly cloudy
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Wind: North 30 km/h gusting to 60
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Low: -21°C
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Wind chill: -20 this evening, -27 overnight
Tuesday, March 17
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Sky: Mainly sunny, increasing cloud late afternoon
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Wind: Up to 15 km/h
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High: -9°C
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Wind chill: -27 in the morning, -12 in the afternoon
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Tuesday Night: Periods of snow, low -12°C
Wednesday, March 18
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Day: 40% chance of flurries, high +2°C (big warm-up)
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Night: Periods of snow or rain, low -6°C
Thursday, March 19 (trend)
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Day: Cloudy, high +5°C
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Night: 40% chance of flurries or rain showers, low -4°C
Wardrobe Recommendations
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Today: Dress for wind chill, not the thermometer—insulated parka, warm mitts, toque, and a neck warmer/balaclava. The 60 km/h gusts will cut through lighter jackets.
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Tonight: With -21°C and wind chill near -27, keep exposed skin covered and limit time outside if possible.
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Tuesday: Still winter-cold, but calmer—layers work well.
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Wednesday/Thursday: Temperatures rise above freezing, but it turns messy (snow/rain mix). Switch to water-resistant outerwear and boots with good traction—slush by day can refreeze at night.
Weather Trivia
A strong north wind can make a day feel brutally cold even without extreme temperatures. Wind strips away the thin layer of warmth around your body, speeding heat loss—why a -10°C day can feel much harsher when gusts hit 60 km/h.
Overview
Thunder Bay weather update for Monday, March 16, 2026: -15°C this morning with wind chill -24 and falling pressure. Strong north winds gusting to 60 km/h keep wind chills near -27. High -10°C today, low -21°C tonight. Mainly sunny Tuesday then snow Tuesday night, followed by a warm-up to +2°C Wednesday and +5°C Thursday with mixed snow/rain possible.
