Today’s Outlook: A Chilly Start with a Toasty Turnaround
THUNDER BAY – Good morning from the sun-kissed shores of Lake Superior! As of 7:00 AM EDT at Thunder Bay Airport, the skies are bright and sunny, but the temperature is a frosty -1.0°C. If you’re heading out early, don’t let that golden sunshine fool you — it still feels like -4°C thanks to a light southwest wind at 8 km/h.
Humidity is at a generous 92%, making it just muggy enough to fog up your glasses if you’re stepping out of a warm car. Meanwhile, the barometric pressure is sitting at a hearty 102.9 kPa and rising — a good sign that today’s weather will stay beautiful for a bit longer. Visibility is fantastic at 32 km, perfect for seeing every sparkling ripple on Lake Superior.
By this afternoon, temperatures are set to climb to a lovely 15°C under sunny skies. Winds will stay light, only up to 15 km/h. The UV index will hit 5 today, which is moderate — so a dab of sunscreen will serve you well if you plan on enjoying the outdoors.
Historically, Thunder Bay has seen some impressive swings on April 26, with a record high of 24.0°C set in 1980 and a record low of -12.5°C in 1972. Today’s high lands comfortably in the middle — a solid “spring has sprung” kind of day.
Tonight will be clear and calm, with temperatures dropping to around zero. A perfect night for some stargazing, or maybe one last cozy fire before summer really kicks in.
Sunday: Clouds Creep In
Sunday starts off with a mix of sun and cloud, but by noon, the clouds will thicken. There’s a 40% chance of showers sneaking in during the afternoon, so you might want to pack an umbrella just in case. Winds will pick up from the south at 20 km/h, helping to push in the cloud cover. The high will reach a respectable 12°C, and the UV index remains moderate at 5.
Sunday night will stay cloudy, with another 40% chance of showers and a low around +4°C. It’ll be a damp but mild night — a fair trade-off for the lush green that’s starting to pop up everywhere.
Monday and Tuesday: Rain, Snow, and the Full Spring Experience
Monday brings periods of rain with a daytime high of 9°C. Monday night gets a bit dramatic as temperatures dip to +1°C, and rain could mix with — you guessed it — snow.
Tuesday continues the trend with cloudy skies and a 40% chance of rain showers or flurries. Temperatures will struggle to reach 8°C, and strong winds will add an extra bite to the day. Tuesday night clears up but turns downright frosty with a low of -6°C — spring’s reminder that winter still has one hand on the door.
What to Wear?
Today’s style guide: a warm jacket this morning, shedding layers by lunchtime. Sunglasses will be your best accessory. Tomorrow, grab a rain jacket and maybe a good pair of waterproof shoes. Monday and Tuesday? Layers, waterproofs, and a tough spirit.
Thunder Bay Weather Trivia:
Did you know? Thunder Bay is known for having one of the sunniest spring seasons in all of Ontario — with an average of 300 hours of sunshine in April alone. Looks like today is doing its part to keep the streak alive!
