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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the True North Brief Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
According to the live forecast above, London Ontario is seeing temperatures near the seasonal average with a mix of sun and cloud. Today’s high reaches the low 20s Celsius, though a gusty southwest wind and a 40% chance of an afternoon shower will keep conditions unsettled.
What is the weather forecast for London Ontario today?
The live forecast shows a daytime high around 22°C under partly cloudy skies. A trough moving through the Great Lakes increases the risk of a brief shower, especially after 2 p.m. Overnight lows fall to 12°C with clearing skies. Humidity remains moderate, with dew points in the mid-teens making it feel slightly muggy. The wind picks up from the southwest at 25–35 km/h, then weakens after sunset.
How does this compare to seasonal norms for late May?
London’s average high for late May hovers near 19°C, so today is a few degrees warmer than usual. The 40% precipitation chance is typical, as this region often sees scattered convection in the spring. If the shower holds off, it will be a good day for outdoor plans—but keep a jacket handy for the wind.
When could the rain start in London today?
Showers are most likely between 2 p.m. and 6 p.m. as the trough passes. They’ll be spotty and light, with rainfall amounts under 2 mm. Skies clear by evening.
Will the wind cause any issues?
Sustained winds of 25–35 km/h with gusts near 45 km/h are common in London in spring. Loose outdoor items may shift, but no severe gusts are expected. Travel on Highbury Avenue or the 401 remains safe.
What about the weekend forecast for London Ontario?
Saturday looks warmer with a high near 25°C and more sun. Sunday brings a low-pressure system with rain likely—tune into the live forecast above for updates. For broader conditions, check our Canada weather hub or read london ontario news for local alerts.
Sources
For other Canadian cities, see Toronto Weather, Ottawa Weather, or review current weather warnings.