From Sub-Zero to Sunshine, Northeastern Ontario Weather Keeps Things Interesting
Current Conditions and Today’s Forecast
Rise and (shiver) shine, Sudbury! It’s a brisk start to the day across the Nickel City. At 5:00 AM EDT, the temperature at Greater Sudbury Airport is a chilly -12.7°C, with a light wind from the west-northwest at 4 km/h making it feel more like -15°C. With a humidity level of 61% and visibility stretching a full 24 kilometres under clear skies, the morning is crisp, calm, and just a little frosty. Barometric pressure is holding steady at 102.1 kPa and on the rise—a sure sign of stable conditions ahead.
Today starts off sunny, but expect a mix of sun and cloud to roll in by noon. Winds will shift to the southwest later this morning and increase to 20 km/h. The high will reach just +1°C, but don’t be fooled—early risers are facing a wind chill of -19°C. It might look like spring out there, but it definitely doesn’t feel like it yet. The UV index climbs to 4, so even in the chill, sunscreen isn’t a bad idea.
Tonight and the Days Ahead
Tonight remains clear and calm, with winds up to 15 km/h and a low of -10°C. Wind chills will dip to -12°C overnight, so those cozy PJs and an extra blanket are still essentials in the Sudbury survival kit.
Thursday brings another mix of sun and cloud and a high of +5°C. It’ll start off brisk again, with a morning wind chill of -13°C, but temperatures will gradually improve throughout the day. The UV index rises slightly to a moderate 5, so shades and sunscreen may finally start to feel relevant.
Thursday night brings cloudy periods with a low of -4°C, and Friday continues the slow march toward warmer weather. Expect more mixed skies and a high of 7°C. Friday night holds steady with cloudy periods and a low of -1°C.
As we roll into the weekend, Saturday promises a mix of sun and cloud and a pleasant high of 10°C. Overnight, it’ll stay mild with a low of +1°C. Sunday finishes strong with a high of 12°C and continued mixed skies. There’s a 30% chance of showers developing overnight, and temperatures will stay comfortable with a low of +3°C.
Historical Weather Check-In
On April 9th, Sudbury’s weather history shows the region’s full range of moods. The warmest April 9th on record soared to 18.5°C in 1991—a proper spring celebration. The coldest? A frigid -22.2°C back in 1960. So today’s -13°C, while cold, isn’t exactly a record-breaker—just a little late-season stubbornness.
What to Wear
Today’s fashion forecast? All about those layers. Start the day in full winter gear—coat, gloves, scarf, hat. As the day warms, you might get away with a lighter jacket, but don’t leave the house without those morning layers. The wind is sneaky, and the sun is still more for show than warmth.
Weather Trivia: Sudbury’s Cold Cache
Did you know Sudbury’s rocky terrain and location make it one of Ontario’s frostiest cities in spring? Its unique landscape can trap cold air longer than neighbouring areas, giving the city a reputation for late-season chills. So yes—winter coats in April are practically tradition here.
