Fog Fades, Sun Peeks, and Weekend Showers Loom in Thunder Bay
THUNDER BAY – WEATHER REPORT – It’s a frosty spring start in Thunder Bay this Thursday, with mostly cloudy skies and a brisk temperature of -1.9°C. With a gentle north-northeast breeze at 6 km/h, it currently feels more like -4°C — and earlier this morning, it dipped to a chilly wind chill of -8°C. That coffee you’re clutching? It’s doing double duty today.
Thursday Forecast – A Mix of Sun and Cold
Fog patches are slowly dissipating as the sun starts to assert itself, leading to a mix of sun and cloud throughout the day. Visibility is solid at 24 km, and the barometric pressure is on the rise at 102.2 kPa — good news for keeping any sudden snow surprises at bay. Humidity remains high at 95%, so the cold still has a bit of bite.
Winds will stay light, up to 15 km/h, and the afternoon high is expected to reach +4°C — not exactly patio weather, but enough to coax a few hopefuls outside. The UV index sits at a moderate 4, so even with cloud breaks, a little sunscreen might be in order if you’re soaking up that elusive northern sun.
Tonight Through the Weekend – Fog Returns, Then Showers and Spring Shenanigans
Tonight will be mostly clear with a few lingering clouds and the potential for more fog to develop overnight. Temperatures will fall to -7°C, and with light winds, the wind chill will make it feel closer to -12°C. It’s a good night for a fire — real or electric.
Friday promises mainly sunny skies, with morning fog patches lifting to reveal the best conditions of the week. Temperatures will climb to a lovely high of 11°C, though the morning will once again feel cold with a wind chill of -12°C. Friday night brings cloudy periods and a mild low of -2°C.
Saturday turns overcast, with a daytime high of 11°C and a 30 percent chance of showers moving in by the evening. Saturday night’s low will hover around +3°C.
Sunday keeps the grey skies rolling with a 40 percent chance of showers and a daytime high of 8°C. Sunday night brings a bit of meteorological mischief — a 40 percent chance of either rain or flurries with a low near +3°C. Monday ups the drama with a 60 percent chance of mixed precipitation and a high of 6°C. Monday night? Another 60 percent chance of snow or rain, and a low of -3°C — because, well, it is Thunder Bay in April.
Thunder Bay Weather History – April 10 Then vs. Now
Thunder Bay has seen a wide range of temperatures on April 10. The record high was a balmy 20.6°C in 1991 — a “shorts in April” kind of day if there ever was one. The coldest? A biting -21.7°C way back in 1940. Today’s high of 4°C may feel tame by comparison, but hey, it’s trending in the right direction.
Wardrobe Suggestions
Layer up this morning — insulated coats, hats, and gloves are still fair game. By the afternoon, a lighter jacket should suffice. And for the brave? Maybe even sunglasses to go with your spring optimism. Just don’t stash the boots yet — Monday may have snow up its sleeve.
Weather Trivia – Lake Superior’s Weather Wizardry
Did you know Thunder Bay’s proximity to Lake Superior gives it one of the most varied spring weather patterns in Ontario? The lake cools the air, creates fog, and has a knack for sneaking in snow when everyone else is planting tulips.
