Spring’s a Tease – Sunshine, Showers, and Snow on Sudbury’s Forecast
Sudbury, ON – Friday, March 21, 2025 – If you’ve stepped outside this morning in Sudbury, you’ve likely felt the bite. At 6:00 AM EDT at Greater Sudbury Airport, temperatures sat at a brisk -9.7°C with a wind chill of -15. The skies are clear for now, but change is in the air — quite literally. Winds from the south at 11 km/h are expected to shift southwest and intensify as the day goes on. The humidity is at a high 87%, and the pressure is sitting at 101.0 kPa, though it’s on a downward trend, hinting that today’s calm start may not last long.
The forecast calls for mainly sunny conditions this morning, but don’t get too attached to the blue skies. Clouds will begin to roll in near noon, with a 60% chance of rain showers or flurries sneaking in late this afternoon. Temperatures will rise to a high of +3°C, but with that southwest wind ramping up to 30 km/h and gusting to 50, it’ll still feel cooler, especially earlier in the day when the wind chill hits -16°C. The UV index will reach 4 — moderate enough to warrant some SPF if you’re out and about.
Weekend Weather – Sudbury Slides Back into a Wintry Groove
Tonight, expect cloudy skies and a continued 60% chance of flurries or showers in the evening. Those flurries become more likely and persistent as the night progresses, with a localized snowfall of 2 to 4 cm. Winds will shift dramatically from southwest to north, maintaining their gusty nature at 30 km/h with gusts up to 50, creating pockets of local blowing snow — not exactly ideal for a nighttime stroll. Temperatures will plummet to -14°C, and wind chill values will make it feel closer to -17°C.
Saturday, March 22nd brings more wintry weather, with mainly cloudy skies and a 60% chance of lingering flurries in the morning. The wind from the north will keep things brisk at 20 km/h, gusting up to 40. The daytime high will only reach -7°C, and the morning will be especially harsh with a wind chill of -25°C. Even the afternoon won’t offer much reprieve, still feeling around -16°C. The UV index holds at 3, which is moderate.
Saturday night will be mostly cloudy, with a low dropping to a bone-chilling -16°C.
Sunday, March 23rd offers a bit of visual reprieve with sunshine returning and a slightly warmer high of -2°C. However, snow returns again Sunday night, with the temperature dipping to -9°C.
Monday, March 24th continues the snowy theme with periods of snow and a high of -2°C, followed by more cloudy skies and a 60% chance of flurries Monday night as temperatures settle at -8°C.
What to Wear – Layer Like an Onion, and Watch for Wind Gusts
Today may start off sunny, but don’t be fooled — winter still has Sudbury in its chilly grip. Start the day with thermal layers, a warm jacket, hat, and gloves. Wind-resistant outerwear is a must, especially with gusts picking up through the afternoon and evening. Waterproof boots might come in handy if you’re out later when rain or flurries begin. Over the weekend, it’s back to full winter gear, especially on Saturday when wind chills dip into “why-did-I-leave-the-house” territory.
Weather Trivia: Sudbury’s March Milestones
On this date, March 21st, Sudbury’s historical high was a relatively balmy 12.7°C set in 1990, while the record low goes all the way down to a frosty -32.2°C, logged in 1960. Compared to that, today’s chill is downright polite.
