THUNDER BAY – WEATHER – Thunder Bay is starting Saturday under partly cloudy skies with a sharp bite in the air. The pressure is rising, a sign of steadier weather today, and we’ll see plenty of sun. The next change arrives Sunday, when periods of snow move in with 2–4 cm expected.
Current Conditions (Observed 8:00 AM EDT, Saturday March 14, 2026)
-
Condition: Partly Cloudy
-
Temperature: -14.9°C (about 5°F)
-
Wind: WNW 7 km/h
-
Wind Chill: -20
-
Pressure: 102.2 kPa (rising)
-
Humidity: 85%
-
Dew Point: -16.8°C
-
Visibility: 32 km
Today (Saturday)
-
Sky: Sunny, becoming a mix of sun and cloud this morning
-
Wind: Becoming SW 20 km/h gusting to 40 late this morning
-
High: -2°C (28°F)
-
Wind chill: -20 this morning, improving to around -6 this afternoon
-
UV Index: 2 (Low)
Expected Conditions (Next Three Days)
Tonight (Saturday Night)
-
Sky: Clear, becoming partly cloudy late
-
Wind: Up to 15 km/h
-
Low: -10°C (14°F)
-
Wind chill: -7 this evening, near -15 overnight
Sunday, March 15
-
Sky: Cloudy
-
Snow: Periods of snow beginning in the morning
-
Snow amount: 2 to 4 cm
-
Wind: Up to 15 km/h
-
High: -6°C (21°F)
-
Wind chill: Near -14
-
Night: Cloudy with 60% chance of snow, low -15°C (5°F)
Monday, March 16
-
Day: Cloudy with 30% chance of snow
-
High: -7°C (19°F)
-
Night: Cloudy periods, low -20°C (-4°F)
Wardrobe Recommendations
-
This morning: Dress for wind chill -20—winter parka, warm mitts, toque, and a neck warmer if you’ll be outside for more than a quick errand.
-
This afternoon: With sun and a high near -2°C, layering works well (warm mid-layer + wind-resistant shell).
-
Tonight: Keep winter gear handy—-10°C feels colder with any breeze, and the wind chill drops near -15.
-
Sunday (snow day): Waterproof boots and a moisture-resistant outer layer help a lot once snow starts and surfaces get slippery.
Weather Trivia
A rising barometer often means improving skies, but in winter it can also bring colder nights. Clearer skies let heat escape quickly after sunset—one reason Thunder Bay can drop hard overnight even after a sunny day.
Weather Summary
Thunder Bay weather forecast for Saturday, March 14, 2026: partly cloudy and -15°C this morning with wind chill -20 and rising pressure. Sunny today with southwest gusts up to 40 km/h and a high of -2°C. Clear tonight, low -10°C. Periods of snow return Sunday with 2–4 cm expected and a high of -6°C.
