Thunder Bay – WEATHER DESK – Thunder Bay starts this Monday under clear skies, but it’s a sharp, dangerous cold to begin the day. Environment Canada has a Yellow Cold Warning (Moderate Impact) in effect, with wind chill values near -40 this morning.

Cloud will increase as the day goes on, and light snow is expected to move in late this afternoon.

Today’s Weather Overview

Current Conditions

Observed at Thunder Bay Airport (7:00 AM EST):

• Temperature: -26.6°C

• Condition: Clear

• Wind: WSW 14 km/h

• Wind Chill: -37

• Pressure: 102.2 kPa (falling)

• Humidity: 61%

• Visibility: 24 km

• Dew Point: -31.8°C

A falling barometer and building cloud are a classic sign that a weather change is approaching—today’s late-day snow fits that pattern.

Today

• Sky: Sunny early, then increasing cloudiness

• Snow: Periods of light snow begin late this afternoon

• Wind: Becoming west 20 km/h, gusting to 40 late this afternoon

• High: -15°C

• Wind Chill: -37 this morning, improving to about -22 this afternoon

• UV Index: 1 (Low)

Extended Weather Forecast

Tonight (Mon, Jan 26)

• Periods of light snow ending late this evening, then mainly cloudy with a 40% chance of flurries

• Wind west 20 km/h gusting to 40 (lighter late evening), then NW 20 gusting to 40 after midnight

• Low: -21°C

• Wind Chill: about -31 overnight

Tuesday (Jan 27)

• Mix of sun and cloud with a 40% chance of flurries late afternoon

• NW 20 km/h gusting to 40

• High: -15°C

• Wind Chill: about -32 morning, -24 afternoon

• Night: Cloudy periods, low -20°C

Wednesday (Jan 28)

• Mix of sun and cloud with a 40% chance of flurries

• High: -16°C

• Night: Cloudy periods, low -23°C

Wardrobe Recommendations

This is “skin-covering cold”:

• Thermal base layer + insulated mid-layer + windproof parka

• Mitts, warm socks, insulated boots with good grip

• Face covering (neck gaiter/balaclava) is important at wind chills in the -30s

• If you’re commuting: toss spare gloves/hat in your bag and keep blankets/charger in the vehicle

Weather Trivia

Wind chill isn’t the actual air temperature—it’s how cold it feels because wind speeds up heat loss from your skin. That’s why -26°C can feel like -37 with only a moderate breeze.

Weather Summary for Thunder Bay
Thunder Bay weather for Monday, Jan. 26, 2026: clear but dangerously cold with a Yellow Cold Warning and wind chill near -40 this morning. Light snow arrives late today with flurries possible tonight and Tuesday.

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