Partly Cloudy Start with Arctic Undertones
Sioux Lookout, ON – Sunday, March 30, 2025 – While parts of Ontario are skating through freezing rain warnings, Sioux Lookout is serving up a much drier—though no less frosty—forecast this Sunday. The skies are partly cloudy, the air is crisp, and the temperature at 5:00 AM CDT is a brisk -8.7°C, with a wind chill making it feel closer to -13°C.
Sunny Vibes, Cold Winds
With 45% humidity and a barometric pressure of 102.3 kPa and falling, conditions are stable but subtly shifting. The east-northeast wind is light at 9 km/h for now, though it’ll strengthen a bit to 20 km/h this afternoon. Visibility is excellent at 24 km, which makes for a pretty view—if you’re brave enough to venture out.
Today’s high will reach -2°C, though it won’t feel that warm, especially with wind chills near -14°C this morning and hovering around -7°C in the afternoon. Still, the UV index is 4, so you might want to grab the sunglasses if you’re heading out to enjoy the sunshine between cloud breaks.
Tonight into Monday: Clear Skies, Deep Cold
Tonight brings mainly cloudy skies early, followed by clearing late in the evening. Winds will ease and shift to light, with the temperature plunging to a low of -16°C. The overnight wind chill will settle around -20°C, so prepare for a frosty start to the workweek.
Monday’s forecast continues the sun-and-cloud theme, with a 40% chance of flurries by late morning as northwest winds pick up to 20 km/h. The high remains stuck at -2°C, with morning wind chills near -21°C. Monday night turns crystal clear—and bitter—with a low of -20°C.
Tuesday finally gives us a taste of early spring with sunny skies and a high of +2°C. The night remains chilly but manageable at -8°C under clear skies.
Dress Code: Winterwear, Still Mandatory
Spring may be making cameos on the calendar, but your wardrobe says otherwise. Bundle up in layers, with thermal undergarments and insulated outerwear. A good wind-resistant coat, gloves, and a toque are essential. And don’t let the sun fool you—frostbite is still very much in season.
Historical Temperature Tidbits
The record high for Sioux Lookout on March 30th was a delightful 13.5°C, recorded in 1998—clearly, an overachieving spring moment. The record low dropped to a face-numbing -33.3°C back in 1964. Today’s chill is a happy medium… if you define “happy” as not quite needing ice tongs to open your car door.
Sioux Lookout Weather Trivia
Here’s a cool fact (pun intended): Sioux Lookout, known as the “Hub of the North,” is also a hub for extreme temperature swings. With clear skies and little urban heat, nighttime lows can dip sharply—even in the shoulder seasons. It’s one of the reasons locals are pros at dressing in layers and trusting nothing about March weather.
