Clouds, Flurries, and Hockey Fever Grip the Bay
THUNDER BAY – April 23, 2025 – While Leafs fans in Thunder Bay are already fired up after that nail-biting overtime win over the Ottawa Senators to take a 2-0 lead in the playoffs, the weather is here to cool things right back down.
As of 7:00 AM at Thunder Bay Airport, it’s a mostly cloudy and brisk 1.6°C. The wind is blowing in from the east-northeast at 16 km/h, just enough to remind you it’s still April in Northwestern Ontario.
Humidity is high at 92%, which makes the chill sink a little deeper, and visibility is an impressive 32 kilometres—plenty of range to spot any incoming precipitation. The barometric pressure is at 102.0 kPa and falling, suggesting that today’s skies might have a few tricks up their sleeve.
As the morning progresses, cloud cover will increase with a 60 percent chance of rain showers or even some flurries. Yep, flurries. Just in case hockey fans were getting too warm from playoff fever, Mother Nature’s offering a reminder that winter still has some unfinished business.
The daytime high will reach 12°C, and the UV index sits at 4—moderate enough for a bit of sunscreen if you’re braving the outdoors to celebrate.
Tonight: Cloudy and Cool with Fog Moving In
This evening remains mostly cloudy, with a 40 percent chance of scattered showers before fog patches sneak in after midnight. Winds will calm down, and temperatures will dip to -1°C. While it won’t be quite cold enough to freeze the playoff buzz, it will feel brisk if you’re stepping out for a late walk or honking your horn in victory.
Into the Weekend: Cloudy Start, Sunny Finish
Thursday brings a blanket of clouds with morning fog lifting to reveal a high of 13°C—mild, but still on the cool side of spring. A 30 percent chance of rain moves in by night, with a low of +2°C.
Friday sees cloudier skies and a 40 percent chance of rain, with a daytime high dropping back to 8°C. The night remains mostly cloudy with a 30 percent chance of rain and a return to -1°C.
But good things come to those who wait! Saturday brings full-on sunshine and a comfortable high of 13°C. Clear skies will continue into the night, though temperatures will once again dip to -1°C. Hey, it’s almost May, but Thunder Bay likes to keep us guessing.
What to Wear (Besides Your Leafs Jersey)
Layer up today! A warm jacket, maybe a toque for good measure, and something waterproof to fend off those possible flurries or rain showers. By Saturday, you might get away with a lighter coat—but don’t stash that scarf just yet.
Thunder Bay Trivia: Did You Know?
On April 23, the warmest day on record in Thunder Bay reached a spring-perfect 24.4°C in 1990, while the coldest dropped to a frosty -8.3°C back in 1966. Today’s forecast of 12°C is a gentle middle ground—and thankfully, not a snow squall in sight. Just some playoff fever in the air.
