Cool Breezes and a Chilly Night Give Way to Bright Skies and Rising Temps
SUDBURY, ON – May 10, 2025 – Northern Ontario is doing its best impression of a spring yo-yo, and Sudbury is right in the middle of it. As of 6:00 AM this Saturday morning, the mercury sits at 6.1°C under partly cloudy skies, with visibility at a crisp 24 km and humidity running a moist 78%. The barometric pressure is 101.7 kPa and falling—an indicator of change on the way. Winds from the north-northwest are blowing at 12 km/h, but buckle up: they’re expected to strengthen to 30 km/h with gusts up to 50 as the day progresses.
Expect clouds this morning to make way for a mix of sun and cloud later in the afternoon, with today’s high capping off around 13°C. The UV index sits at a moderate 5, so while you might not need SPF 50, it’s still smart to protect your skin if you’re out and about.
Tonight’s a Cold One, But Sudbury Bounces Back Strong
Tonight, clear skies take over as the wind calms to a light breeze after an early 20 km/h gust from the north. However, it’s going to be a brisk night—temperatures will dip below freezing to a chilly low of -1°C. Time to dig out that toque and maybe warm up a hot chocolate.
But don’t let the frost fool you—Sunday is looking spectacular. With nothing but sunny skies and a much more comfortable high of 16°C, it’s shaping up to be the perfect spring day. The UV index jumps to a high 7, so sunglasses and sunscreen are back in play. Sunday night stays clear with a much milder low of 6°C.
Monday Heats Up in a Big Way
Monday turns up the heat with a forecast high of 25°C under a clear, sunny sky. That’s full-blown patio weather, folks. The night remains clear with a low of 10°C—perfect for a late-night walk or just sleeping with the windows open.
Wardrobe Tip
It’s a “layers kind of weekend” in Sudbury. Start with a windbreaker or light jacket on Saturday, then transition into lighter clothing by Sunday afternoon. Monday may have you reaching for shorts and a T-shirt.
Weather Trivia: A Tale of Two Extremes
Sudbury has seen quite the variety on this day in history. The record high for May 10 is a balmy 28.9°C, set in 1961. The coldest? A teeth-chattering -7.8°C back in 1976. So, this weekend’s range of -1°C to 25°C fits perfectly into Sudbury’s weather legacy of unpredictability!
