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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.
Live data from Open-Meteo · updates automatically ·
Based on the live forecast above, check the hourly breakdown for Mississauga to plan short windows outdoors — the data shows temperature and precipitation chances shifting through the day, so you can time errands or commutes between the most active periods.
What do the hourly numbers mean for today’s weather in Mississauga?
The hourly forecast layers temperature in Celsius, wind speed in kilometres per hour, and probability of precipitation for each three-hour block. This lets you see exactly when the chill or rain picks up, rather than relying on a single daily high. The live forecast above updates automatically, so the next six to twelve hours are the most reliable window for decisions like leaving early or delaying a walk.
How does the hourly view help with planning further ahead?
Hourly data is most useful for the next 48 hours. For a broader look, check Canada weather hub for the weather in Mississauga 10 days or weather in Mississauga 30 days outlook, which give trend lines rather than minute-by-minute precision. The weather in Mississauga today and weather in Mississauga tomorrow are best served by the hourly table above. For longer-range planning, see Toronto Weather for regional patterns that often mirror Mississauga conditions.
How often does the hourly forecast update?
Environment and Climate Change Canada refreshes hourly forecasts every three hours based on model runs. The live forecast above pulls those updates automatically, typically within 15 minutes of the new data being published.
Why does hourly temperature sometimes jump between blocks?
Sharp changes often mark a front passage — a cold or warm boundary moving through Mississauga. The live table shows these shifts as distinct rows because each three-hour block represents the expected conditions for that specific period.
Can I use the hourly data for the weekend in Mississauga?
Hourly forecasts are reliable up to 48 hours out. For weekend plans, refer to the weather Mississauga 14 days outlook on our site, which gives daily summaries rather than block-by-block detail.