Published on Jul. 18, 2025, 12:03 PM
Rain from the U.S. Midwest will push into southern Ontario late Saturday afternoon, but don’t cancel your plans just yet
Saturday will see thunderstorms move into southern Ontario, after a hot week of high temperatures across the province.
Thanks to a group of thunderstorms currently moving across the Midwest in the United States, some of the southern parts of the province can expect to see more severe storms.
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But the forecasts remain uncertain on the timing and location of the system as it moves east over the Great Lakes.
Both north and south may see some rain
Before the rain really starts to kick off, some scattered showers with embedded thunder potentially extend into the areas around Muskoka and Georgian Bay.
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The late afternoon is when we’ll start to see a cluster of storms manifest, moving into Lake Huron and the Georgian Bay shores before reaching inland into southern Ontario.
Between the late afternoon into early evening, that severe weather could hit from regions near Barrie to Sarnia, bringing heavy rainfall, large hail and the risk of strong winds. You may even be able to see a shelf cloud as the storm approaches.