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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Toronto Post Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
The live radar above shows precipitation intensity across London Ontario and surrounding Middlesex County, including the Exeter radar site, with reflectivity values ranging from 15 to 55 dBZ. This is the most direct way to track rain, snow or mixed precipitation moving through the region right now.
What does the London radar show in the hourly loop?
The composite radar combines returns from the Exeter and King City sites to cover Southwestern Ontario. For weather radar london ontario hourly updates, the loop animation on the live radar above displays the past 60–90 minutes of storm movement, showing direction and speed of precipitation bands so you can estimate arrival times at your location.
How far does the radar reach and what about Exeter?
The network covers a radius of roughly 240 kilometres around London, reaching Lake Huron west and Lake Erie south. The london ontario weather radar exeter live feed is part of this same system; the Exeter site provides higher-resolution data for the western half of the region, including Grand Bend and Strathroy.
How do I read the colour scale on the radar?
Light green indicates light rain or drizzle (15–30 dBZ). Yellow and orange are moderate rain (35–45 dBZ). Red to magenta signals heavy rain or hail (50+ dBZ). Blue shades represent snow.
Does terrain affect the London radar?
Southwestern Ontario is flat, so terrain blockage is minimal. However, beam overshoot can reduce accuracy for low-level precipitation beyond 200 km, especially with distant convective cells.
Does the radar show what will happen later today?
No. The radar shows only current precipitation. For forecasts, check the Canada weather hub or the Toronto Weather page for regional outlooks and warnings.