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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Toronto Post Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
The live forecast above shows a high of 22°C and a low of 14°C for Mississauga today, with a 40% chance of afternoon showers. That means a mild, partly cloudy day where you should keep an umbrella handy between 2 p.m. and 6 p.m.
How does today compare to seasonal norms for Mississauga?
Mid-June highs in Mississauga typically range from 23°C to 26°C, so today’s 22°C is slightly below average. Overnight lows near 14°C are within the normal band of 12–16°C. The chance of rain is near the seasonal average of 35–45% for this date.
When will the rain arrive and how long will it last?
Showers are most likely between 2 p.m. and 6 p.m., with a 40% probability. Total accumulation is expected to be less than 2 millimetres, so any wet roads will dry quickly. Winds from the southwest at 15–20 km/h will keep the air feeling fresh.
Will the rain affect evening commutes?
Yes, the highest rain probability overlaps with the 4–6 p.m. rush hour. Showers will be light, but wet roads may slow traffic on the 401 and QEW. Allow an extra 10 minutes if driving westbound.
Is there any risk of thunderstorms?
No. The low-pressure system moving through southern Ontario today is weak and lacks the instability needed for thunder. Only steady, light rain is expected.
What should I wear today?
A light jacket or sweater for the morning (14°C) and a short-sleeve shirt for the afternoon. Carry a compact umbrella for the 2–6 p.m. window. Comfortable shoes are fine.
Sources
For broader conditions across the province, see our Canada weather hub or the Toronto Weather page. If you’re tracking storm alerts, visit Weather Warning.