NetNewsLedger Weather Desk – Tuesday, May 20, 2025
THUNDER BAY – After a frosty start to the long weekend, we’re now easing into a slightly more comfortable morning in the city, currently sitting at 4°C under mostly cloudy skies. Winds are brisk from the east-northeast at 24 km/h, gusting up to 43 km/h, so don’t be surprised if your hair gets re-styled by nature on the way to work. The air pressure is steady at 102.4 kPa, while humidity is at a modest 63%, making things feel crisp but not clammy.
Today: A Sunny Rebound with a Breeze
Today’s forecast is your classic “don’t let the cool start fool you” scenario. Sunny skies will dominate the day, but those east winds at 20 km/h gusting to 40 will keep a noticeable chill in the air. Still, it’s a good one for a brisk walk or a lakeside stroll—just hold on to your hat. The temperature will climb to a high of 13°C, with a UV index of 7, which is high—so sunscreen is still your friend.
Tonight: Cloud Cover and Strong Winds
Clouds begin to roll in this evening, adding some overnight insulation. However, expect the winds to kick up a notch—easterly at 30 km/h gusting to 50. Bundle up if you’re out for an evening walk. The overnight low will settle at 4°C.
Midweek Outlook: Warming Up Slightly
Wednesday promises sunny skies and a noticeable bump in temperature, with a high of 17°C. The east wind will persist—still gusting up to 50 km/h—but the sunshine and warming trend continue. Thursday brings a mix of sun and cloud with a more modest high of 13°C, continuing this seasonally cool but stable weather stretch.
Wardrobe Tip
Think layers: a windbreaker and perhaps a scarf to ward off that gusty bite. It’ll feel warmer in the sun, but shade and wind will have a different opinion. By afternoon, you can peel a layer or two and enjoy spring’s return—slow but sure.
Did You Know?
Thunder Bay holds the record for Ontario’s sunniest city in spring, averaging over 700 hours of sunshine from March to May. That explains the bright blue skies, even if it’s still coat weather.
