A Wintry Wake-Up Gives Way to Wet Weather Ahead
Forecast for Thursday, May 1, 2025
Sudbury is shaking off a frosty start to the day with temperatures at -2.3°C as observed at 6:00 AM from Greater Sudbury Airport. The southeast wind is light at 7 km/h, but it’s enough to bring the wind chill down to -5°C—a brisk reminder that northern Ontario springs like to keep you on your toes. The barometric pressure is at 102.0 kPa and falling, hinting at the incoming shift in weather. Humidity is sitting high at 89%, and visibility is excellent at 32 kilometres under mostly cloudy skies.
As the morning moves along, Sudbury will enjoy a brief flirtation with a mix of sun and cloud before the atmosphere pulls the curtains closed around noon. Cloud cover will increase steadily, leading into rainfall expected to begin late this afternoon. Winds will remain gentle, up to 15 km/h through the day, with the high reaching a modest 9°C. The UV index clocks in at 6, which is considered high, so if the sun breaks through at all, don’t skimp on that sunscreen.
Tonight, the rain gets serious—expect between 20 and 30 mm of the wet stuff, transitioning to periods of drizzle by the overnight hours. A northeast wind will settle in at 20 km/h this evening, and temperatures will hold steady with a low of 5°C. It’s definitely going to be a damp and dreary night, so it’s a good one to queue up your favourite movie and stay in.
Looking Ahead to Friday and the Weekend
Friday, May 2, keeps the umbrella in play as rain continues throughout the day. The morning drizzle will taper into more defined showers by afternoon, as winds shift to come from the northwest at 20 km/h. Daytime highs will reach around 10°C with a UV index of 3—moderate enough that a bit of brightness might sneak through the gloom.
Friday night stays cloudy with a 60 percent chance of more showers and an overnight low of 3°C. Saturday finally brings a weather break! Expect clearing skies and a dry high of 11°C, with a crisp but clear night dipping to a low of just 1°C.
Historic Weather: Cold Comfort
Historically on May 1 in Sudbury, the warmest temperature recorded was a spring-like 25.6°C in 1987, while the coldest shivered in at -8.9°C way back in 1974. Today’s start is leaning chilly, but far from a record-breaker. It’s classic northern Ontario—never count your crocuses before they bloom.
What to Wear?
You’ll need layers to brave the frosty morning, but make sure they’re waterproof! A warm base layer and a rain jacket will serve you well today. Toss in waterproof boots and keep the umbrella close—you’ll need it by dinner.
Weather Trivia: Sudbury’s Rainy Reputation
Sudbury isn’t just about mining—it’s also one of northern Ontario’s wetter cities, with annual precipitation around 900 mm. Today’s downpour will make a respectable dent in that total!
