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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Northern Focus Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
London weather in Ontario is currently shaped by the conditions shown in the live forecast above, with the city’s typical mix of humid summers and cold, snowy winters defining the seasonal rhythm. For the immediate outlook, that forecast is your best guide.
What is the weather like in London, Ontario right now?
The live forecast above provides the most accurate current conditions for London, including temperature in Celsius, wind speed in kilometres per hour, and any precipitation. London sits in Southwestern Ontario, which means its weather can change quickly as systems move in from the Great Lakes. For a broader view of conditions across the province, check our Canada weather hub.
What should I expect for the next month?
London’s weather over the next 30 days will follow the seasonal pattern typical of the region. If you are checking london ontario weather 30 days ahead, expect gradual shifts: spring brings rain and rising temperatures, summer delivers humidity and occasional thunderstorms, autumn offers crisp air, and winter brings lake-effect snow. For longer-range planning, the Toronto Weather page can give you a sense of similar Southwestern Ontario trends.
Does London, Ontario get extreme weather?
Yes, London can see severe thunderstorms in summer, including hail and high winds. Winter blizzards and freezing rain are also common, so it is wise to monitor Weather Warning alerts.
How does Lake Huron affect London’s weather?
Lake Huron, about 50 kilometres west, drives lake-effect snow in winter and can cool summer breezes. This makes London snowier than cities farther from the lakes, like Ottawa Weather.
Is London’s weather good for outdoor activities?
Spring and early autumn are ideal for hiking and cycling, with mild temperatures. Summer can be humid but is great for festivals, while winter offers skiing and skating when snow is steady.