London, Ontario Weather Hourly

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By Kevin Sullivan, Culture & Society EditorReviewed by Andrew LeblancForecast data: Open-Meteo & Environment and Climate Change Canada

Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Scope Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.

For London, Ontario, the live forecast above shows the next 24 hours of temperature, precipitation chance, and wind conditions, updated hourly by Environment and Climate Change Canada. This data helps you plan your day around the most immediate weather shifts.

What does “hourly weather” actually tell you?

Hourly weather breaks the day into 60-minute windows, showing temperature in Celsius, wind speed in kilometres per hour, and the probability of rain or snow for each slot. Unlike a daily high-low summary, this lets you see exactly when a morning shower might clear or when the wind picks up for an evening walk. The practical takeaway: check the hourly data to time outdoor activities, not just to know if it will rain “sometime today.”

How reliable are hourly forecasts for London?

Hourly forecasts are most accurate within the first 12 to 24 hours, as they rely on high-resolution computer models and local observations from London International Airport. Beyond 48 hours, confidence drops significantly. For the most current picture, always refer to the live forecast above, which updates as new data arrives from Environment Canada.

CityLondon, Ontario

Forecast update frequencyEvery hour from Environment Canada

Typical hourly variablesTemperature, precipitation probability, wind speed & direction, humidity

Best usePlanning short-term outdoor activities within 24 hours

Why does the hourly forecast sometimes change quickly?

Small shifts in wind direction or incoming weather systems can alter precipitation timing by 30–60 minutes. Environment Canada updates its models hourly, so the live forecast above reflects those adjustments as they happen.

Can I use hourly data to plan a weekend trip?

Hourly forecasts lose reliability beyond 48 hours. For weekend planning, use the daily outlook on our London Ontario Weather page, then check the hourly data the day before you go.

Does the hourly forecast include wind chill or humidex?

Yes, the live forecast above often includes “feels like” values that combine temperature with wind or humidity. This is especially useful in London’s humid summers and chilly winters.