Greater Sudbury Forecast: A Symphony of Showers, Sunshine, and Sudden Swings
Sudbury, Ontario – April 24, 2025 – The Nickel City starts the day on a misty, mysterious note under partly cloudy skies and nearly saturated air. At 6:00 AM from Greater Sudbury Airport, it’s a brisk 2.5°C with the humidity nearly maxed out at 96%—yes, that “walking through a cloud” kind of air. The wind is drifting in from the east-northeast at a steady 13 km/h, and the barometric pressure is on the rise at 102.1 kPa. Visibility is clear up to 24 km, but don’t let the view fool you—the weather’s got some tricks up its sleeve.
Today: Light Drama With a Chance of Thunder
Early risers may catch the tail end of some morning showers and perhaps a rumble of thunder before the skies shift to a more balanced mix of sun and cloud. The high will reach a comfortable 16°C—warm enough to coax some smiles but not quite patio weather yet. With a moderate UV index of 5, you’ll want to dab on that sunscreen if you’re heading out for a stroll.
Tonight: Clouds Gather, Fog Creeps In
Tonight, skies start off partly cloudy but will become overcast near midnight. There’s a 40 percent chance of showers rolling in before dawn, and fog patches will begin to develop overnight. Visibility may drop like a rock, so if you’re planning any late-night adventures (or grocery runs), keep the headlights on and drive safe. Overnight temperatures will hover around a cool +3°C.
Friday Forecast: Rain Rolls In With a Hint of Chill
Friday starts on a damp note with a 40 percent chance of early morning showers, followed by rain setting in for real during the day. Fog patches will lift, but the rain isn’t holding back—with 10 to 15 mm expected. Winds will pick up from the northeast at 20 km/h in the afternoon, keeping things chilly with a high of just 8°C. The UV index drops to a low 1—so sunscreen gets the day off.
Friday night could bring a real surprise: a 70 percent chance of rain or snow as temperatures drop to +1°C. Sudbury might get a brief throwback to winter, just to keep us humble.
Weekend Outlook: A Taste of All Seasons
Saturday, April 26: Expect a true Northern Ontario weather blend—sun, clouds, and a 30 percent chance of showers or even flurries. Yes, you read that right. The high will be 12°C, which isn’t bad unless you’re caught in a midday snow flurry.
Saturday Night: Skies clear up and temperatures settle to around 0°C. Cozy firepit weather, anyone?
Sunday, April 27: The weekend ends on a high note—literally. Sunday promises sunshine and a beautiful high of 18°C. The night remains clear and mild with a low of +4°C. A proper spring day at last!
Dress to Impress (and Stay Dry)
Layer up this week, Sudbury! Waterproof outerwear is a must for today and tomorrow, and a warm hoodie or fleece will come in handy for the chillier evenings. And don’t forget the umbrella—you’ll likely need it before the weekend.
Historic Weather Nugget
On April 24, Sudbury’s warmest temperature on record reached 26.1°C back in 1990. The coldest? A frosty -10.6°C in 1947. So today’s 16°C is right in the “thank-you-weather-gods” zone!
Weather Trivia Time!
Did you know Sudbury sits inside the second-largest known impact crater on Earth? The Sudbury Basin was formed by a meteor over 1.8 billion years ago—and now it hosts some of the wildest weather swings in Ontario!
