Weather Forecast for Dryden and Vermilion Bay – A Clear Day Ahead, but Frosty Warnings Persist
Frost Advisory in Effect – Cool Mornings and a Watchful Eye on the Garden
Dryden & Vermilion Bay, ON – Thursday, May 22, 2025: Mother Nature is throwing a frosty curveball this morning, with a Frost Advisory in effect across the region. As of 4:00 AM, the temperature at Dryden Airport is 4.8°C under mainly clear skies, with humidity at 61% and a dew point of -2.1°C, which is cool enough to make frost a real threat in low-lying and exposed areas. Winds are light from the east-northeast at 5 km/h, and barometric pressure is holding steady at 102.2 kPa and rising, indicating fair weather — but clear skies are exactly what allow those temperatures to dip so low overnight.
Environment Canada warns that near-freezing conditions are expected early this morning, and patchy frost may return again tonight into Friday morning. So, if you’ve been coaxing your garden into bloom, this is your sign to tuck those plants in — or risk waking up to withered greens.
Sunshine Today, Gusty Winds This Afternoon
Despite the cold start, today shapes up beautifully with sunny skies, though clouds will increase late this afternoon. Winds will pick up, becoming north at 20 km/h with gusts up to 40 km/h, which may add a chill to the air despite the high of 16°C. The UV index sits at 6, which is high, so even with a few clouds moving in, don’t forget your sunscreen if you’re outside enjoying the afternoon.
Another Chilly Night With Patchy Frost Risk
Tonight, skies turn partly cloudy, and winds will ease after gusting into the evening. Temperatures drop to +2°C, and once again, patchy frost is expected, especially in rural and frost-prone areas. So, it’s another night of plant blankets and garden caution.
The Weekend Forecast Looks Bright and Steady
Friday returns to sunny skies with a high of 16°C, nearly identical to today, and another overnight low of +2°C — so that pesky frost risk might linger for one more night. By Saturday, things improve with a high of 17°C under sunny skies and a warmer night at +3°C. Sunday takes it up another notch with a high of 19°C and a mild low of +5°C, finally putting frost behind us (fingers crossed).
What to Wear?
Layers are your best bet today. It’s chilly to start, breezy by midday, and just warm enough for a light jacket by afternoon. Gardeners — keep those covers handy for tonight. Sunglasses and sunscreen will also serve you well during today’s sun-filled hours.
Historic Temperatures for May 22
Dryden has seen some spring extremes on this date — the record high is 28.9°C, while the record low sits at a frosty -4.1°C. We’re comfortably in the middle today, but frost still likes to sneak in under the radar this time of year.
Dryden Weather Trivia
Did you know Dryden is one of the sunniest spots in Northwestern Ontario? That means even though it’s frosty now, things warm up quickly during the day. But clear nights, like the ones we’re seeing now, are notorious for overnight cold snaps — so gardeners, you’ve been warned: spring sunshine by day doesn’t guarantee warmth after dark!
