Toronto Weather Forecast – Midweek Drizzle with a Side of Gusts
Showers Incoming: Cloudy Skies and Steady Rainfall on Deck
Toronto, ON – Wednesday, May 21, 2025: Don’t even think about leaving the house without an umbrella today, Toronto — unless you’re aiming for the windswept, “just got caught in the rain” look. At 6:00 AM from Toronto Pearson International Airport, conditions are mostly cloudy with a current temperature of 9.3°C. The humidity is sitting at a damp 75%, and there’s a steady east wind blowing at 19 km/h, gusting up to 34 km/h — enough to remind you to hold that umbrella tightly. The barometric pressure is at 101.2 kPa and falling, signaling that a rainy system is making itself quite at home.
Today’s forecast calls for a 40% chance of showers late this morning before periods of rain begin in earnest early this afternoon, bringing 5 to 10 mm of wetness. Winds will increase to 20 km/h, gusting up to 40 km/h from the east, and temperatures will slowly rise to a high of 13°C. With a UV index of 5, there might be brief sun peeks, but they’ll be few and far between.
Tonight and Tomorrow: Steady Rain and Stiff Winds
As night falls, the rain doesn’t let up — in fact, it intensifies. Expect 10 to 20 mm of rainfall tonight with a low holding steady at 9°C. Winds crank up even more, coming in from the east at 30 km/h, gusting to 50 km/h. So if you’re headed out, rain boots and waterproof gear are non-negotiable.
Thursday continues the soggy streak with 5 to 10 mm of additional rainfall under persistent grey skies. Winds remain stubborn at 30 km/h gusting to 50 km/h, and the temperature won’t budge much, maxing out at 10°C. The UV index drops to 2, so the only rays you’ll likely see are from your desk lamp. Expect continued rain Thursday night, with the low remaining around 9°C.
Looking ahead to Friday, showers are still expected, but there’s a glimmer of relief — temperatures climb to a more tolerable high of 16°C. The skies start to show some variability Friday night with cloudy periods and a 30% chance of lingering showers, and a cooler low of 7°C.
What to Wear?
Toronto, today is tailor-made for trench coats and waterproof footwear. The wind calls for a snug hoodie or scarf, and a sturdy umbrella will serve you well — preferably one that won’t turn inside out in 40 km/h gusts. Keep your wardrobe layers light but water-resistant, and tuck a dry pair of socks in your bag — trust us on this.
Historic Temperatures for May 21
On this date in Toronto’s weather history, the record high was a sizzling 32.2°C, while the record low dipped to a brisk 1.1°C. While today isn’t extreme, it’s definitely on the soggy side of average.
Southern Ontario Weather Trivia
Did you know Toronto gets more annual rainfall than Vancouver? It’s true! While Vancouver may be famous for its drizzles, Toronto edges it out on total yearly precipitation — mostly from intense spring and summer systems like the one we’re seeing this week.
