From The Weather Network
The transition to consistent cool weather will be slower than what we typically see across most of Canada. Extended periods of pleasant fall weather are expected to last well into October, especially across the eastern half of the country. However, we are closely watching the potential for an abrupt transition to a colder pattern before the end of the fall season.
In Ontario, a slower than normal slide from summer to consistently cool fall weather is expected this year. While we have already had a couple shots of autumnal weather, the rest of September will feature summer’s extended grand finale with a prolonged stretch of very warm and mostly dry weather across the province, including London and Toronto. Warmer than normal temperatures are expected to dominate during most of October, with periods of pleasant weather for enjoying the fall colours from Kenora to Ottawa.
Fewer than normal fall storms are expected through October, but we do have a heightened risk for a couple of potent storms, which could pack quite a punch as shots of cooler weather interrupt our mild spells.
However, the mild pattern is expected to break down before we reach the end of the season. While the timing is still uncertain, we could see an abrupt pattern change to a colder and more stormy pattern as we approach early winter.
Whenever colder weather does arrive, the Great Lakes will be warmer than normal at the time, helping to set the stage for substantial lake effect events, especially for ski country.
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