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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.
The live radar above shows real-time precipitation moving across London, Ontario, using data from the Exeter radar site (CWWE). It refreshes every 10 minutes, giving you a clear picture of rain, snow, or mixed showers now and in the near future.
What does the live radar show for London, Ontario?
The radar display uses a colour scale to indicate precipitation intensity—green for light rain, yellow for moderate, and red for heavy. You can toggle between reflectivity and precipitation type to see whether the band heading your way is rain, snow, or a mix. Southwestern Ontario is largely flat, so the beam reaches out about 250 kilometres, covering London, Exeter, and surrounding counties clearly. For a closer look at trends, loop the animation to watch how cells develop, especially during spring storms or lake-effect snow.
Can I check weather radar London Ontario hourly?
Yes: the live radar above updates automatically, but you can step through individual scans to see changes over the past couple of hours. For a longer hourly view, pair the radar with Environment Canada’s hourly forecast for London. If you live near Exeter, the London Ontario weather radar Exeter live feed is the same data—just the source location. For severe weather alerts, bookmark our Weather Warning page, and for a broader picture visit the Canada weather hub.
Why does the radar sometimes show nothing even when it’s raining?
Light drizzle or very low‑level rain may pass below the radar beam. Also, if the radar is in clear‑air mode (no precipitation within range), it will appear blank until a shower enters its coverage.
How far can the London-area radar detect storms?
The Exeter radar has a nominal range of 250 kilometres. Beyond that, the earth’s curvature and beam spread reduce accuracy, so storms near Lake Huron or Lake Erie may appear weaker than they actually are.
Is the Exeter radar affected by hills or buildings?
Southwestern Ontario is mostly flat farmland, so terrain blockage is minimal. The only occasional interference comes from tall towers or wind turbines near the radar site, but these are accounted for in the data processing.