Wednesday Starts Warm, But the Clouds Are Setting the Tone
The Heat Wave Eases, But Humidity Still Hangs On
Good morning, Toronto! After a scorcher of a start to the week, today offers a slightly gentler hand — but don’t put away your water bottle or sun hat just yet. At 8:00 AM, Toronto Pearson Airport is reporting a temperature of 23.5°C, under mostly cloudy skies. With a dew point of 16.1°C and humidity at 63%, it’s still feeling quite muggy, with a humidex of 28 already in play.
Visibility is a crystal-clear 24 kilometres, and the barometric pressure is 102.0 kPa and rising, suggesting a bit of short-term stability before the clouds bring wetter news. Winds are blowing from the north at 17 km/h, adding a little breeze to help counter the stickiness.
This afternoon will bring mainly cloudy conditions with a high of 29°C, and it will feel more like 34 with the humidex. The UV index sits at a very high 9, so even if the sun seems bashful behind the clouds, it’s still doing damage — protect your skin and eyes accordingly!
Tonight and the Days Ahead: Rain Clouds Looming
Tonight starts off with a few clouds, but things will take a turn after midnight. Cloud cover will increase, and there’s a 30% chance of showers overnight, as easterly winds pick up to 20 km/h. The overnight low will be a warm 19°C, keeping things tropically toasty as you sleep — or try to.
Thursday brings a notable shift in pattern. It will be cloudy all day with a 60% chance of showers, and east winds continuing at 20 km/h. The high will be a much cooler 22°C, but humidity will still push the humidex to 26, keeping that slightly sticky summer feel alive. The UV index remains elevated at 7, so sun protection remains relevant even under clouded skies.
Thursday night holds a 40% chance of lingering showers with an overnight low of 17°C. Friday continues the trend of cloudiness and wet weather with another 60% chance of showers and a daytime high of 26°C. Friday night mirrors the same pattern — cloudy, showers likely, and a low of 19°C.
Saturday may offer a bit of a break with just a 30% chance of showers, and a high of 28°C. While not fully dry, the weekend could still deliver some opportunities for outdoor plans — umbrella optional, but recommended.
What to Wear: Light Layers and Rain Readiness
Today is still summer-lite attire — breathable, light-coloured clothing to handle the humidex. But keep an umbrella handy for late-night or early morning travels. With cloudy skies dominating the next few days, it’s a good time to switch from sandals to waterproof shoes, and layer up to stay comfy through cool breezes and rain bursts.
Toronto’s Climate Footnote
Toronto’s record high for June 25th stands at 34.4°C, set in 1988, so while today’s high of 29°C feels intense, it’s not territory the city hasn’t tread before. And with the urban heat island effect still influencing overnight warmth, residents might find relief only with a fan, AC, or a cool library or shopping mall escape.
Did you know? Toronto’s downtown core retains heat well into the evening due to concrete and asphalt, making nighttime temperatures several degrees warmer than outlying suburbs. That’s why it can feel like summer never sleeps in the city!
