Cold Morning with Clouds and Flurries on the Horizon
Thunder Bay weather: Cold start with -16°C wind chill, turning milder with snow and rain tonight. Gusty winds and unsettled conditions continue this week
Thunder Bay wakes up to a mostly cloudy morning with a temperature of -12.2°C. A light west-southwest wind at 6 km/h makes it feel like -16°C. The humidity is at 86%, meaning the air has a bit of bite to it, and the barometric pressure is at 101.7 kPa but falling, signaling some active weather coming soon. Visibility is a solid 24 km, but flurries later this morning could briefly reduce that.
For today, expect mainly cloudy skies with a 30% chance of flurries later this morning. Winds will stay light, up to 15 km/h, but the temperature will climb to +1°C by the afternoon. The wind chill remains a frosty -16°C this morning, so bundle up if you’re heading out early. The UV index stays low at 2, meaning sunglasses might help with glare off the snow, but sunburn isn’t a concern.
Tonight: Snow Arrives, Then a Wintry Mix
Cloudy skies continue into the evening, and snow will begin falling tonight, turning into a mix of snow and rain overnight. Expect around 2 to 4 cm of snowfall before precipitation turns slushy. Winds will pick up from the west at 30 km/h late in the evening, making for a blustery night. The low will dip to -4°C, but temperatures will rise to +3°C by morning, meaning icy, wet, and slippery conditions are likely. The wind chill will be around -8°C earlier in the evening before the milder air settles in.
Looking Ahead: A Sloppy Start to the Week
Monday will be cloudy with a 40% chance of drizzle or flurries in the morning, transitioning to a 40% chance of rain showers or flurries in the afternoon. The wind will strengthen from the west at 30 km/h, gusting to 50 km/h, making things feel colder than the steady temperature of +3°C suggests. The UV index remains very low at 1.
Monday night will be cloudy with a 30% chance of flurries and a low of -3°C.
Tuesday stays cloudy with a 30% chance of flurries, and the high will be +1°C. By nightfall, there will be cloudy periods with a 30% chance of flurries and a low of -5°C.
Wednesday keeps the clouds rolling in, with a 60% chance of flurries and a high of +2°C. The night will be cloudy with a 30% chance of flurries and a low of -7°C.
What to Wear in Thunder Bay
With morning wind chills around -16°C, a warm winter coat, gloves, hat, and scarf are still essential. However, with temperatures rising to +3°C and rain mixing with snow tonight, a waterproof layer and insulated boots are your best bet. Gusty winds on Monday will make a windproof jacket a great option, and with slushy, icy conditions expected, watch your step—especially in the morning when surfaces may be slick.
Fun Weather Trivia
Did you know that Thunder Bay once experienced a staggering 78 cm of snow in a single storm? That happened in December 1977, burying the city in one of its biggest winter wallops ever! While tonight’s 2 to 4 cm isn’t quite record-breaking, it’s still enough to make the roads messy, so drive carefully!
