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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Perspective Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Today in Markham, expect a mix of sun and cloud with a high near the value shown in the live forecast above, as a cold front stalls over the northern suburbs of Toronto. Lake Ontario’s breeze keeps the air cooler near the 404 corridor, while inland neighbourhoods may see a few more degrees.
What is the forecast for the next few days?
For weather in Markham tomorrow, the live forecast above shows similar conditions, though a low-pressure system could bring a slight chance of showers by late afternoon. Looking ahead at the weather Markham 14 days outlook, temperatures are expected to stay within a few degrees of seasonal norms, with no major storm systems on the horizon. For a longer view, the Markham weather 30 day trend suggests a gradual cooling pattern typical of late autumn.
Should I expect any weather warnings?
No alerts are in effect for Markham right now, but Environment and Climate Change Canada may issue advisories if lake-effect snow develops later in the week. Keep an eye on the live forecast above for updates.
Will it rain today in Markham?
No significant rain is expected today. The live forecast above shows a low chance of precipitation, though a few light sprinkles cannot be ruled out near the lake in the late afternoon.
How accurate is the weather network Markham 14 days forecast?
Long-range forecasts are reliable for trend identification, not exact day-to-day details. The Canada Perspective weather hub recommends checking the 7-day outlook for higher confidence.
What should I wear in Markham today?
A light jacket or sweater is ideal given the high in the range shown above. Consider a wind-resistant layer if you’ll be near the lake or in open areas like Markham’s Rouge Park.
Sources
Find more local forecasts for the GTA on our Toronto weather page or check for any active alerts at the Canada Perspective weather warnings centre.