Another serving of summer for Eastern Canada, timing here
Sunday, October 1, 2017, 10:54 AM - While a cool airmass settles over Eastern Canada this weekend, it will be short-lived. Daytime highs are expected to reach the upper 20s by midweek as a ridge builds over the region.
"Frequent swings in temperatures will continue during the next 10+ days," says The Weather Network meteorologist Dr. Doug Gillham. "After a frosty start to the day in outlying areas Sunday morning, a steady warming trend will begin early next week."
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A frost advisory is in place Sunday for all of New Brunswick, Nova Scotia, P.E.I., and parts of southern Quebec. It is advised to take preventative measures to protect frost-sensitive plants and trees as temperatures will likely drop to the low single digits Sunday night into pre-dawn Monday.
Temperatures look to peak on Wednesday, with mid to upper 20s expected across southern Ontario and Quebec. Humidity in the region will make it feel closer to the 30s. These projected temperatures are certainly above seasonal as the average for this time of year sits around 17oC in Toronto, and 16oC in Ottawa and Montreal.
"Briefly cooler late next week -- uncertainty regarding the extent of the cooler weather for the south, but it looks like milder weather will spread back into the region during the long weekend," says Gillham.
High pressure will also keep the region protected through the week, with no major systems in sight, though conditions may be unsettled into Thanksgiving weekend along a cold front.
"We'll probably have the threat for rain at some point during the weekend, but too much uncertainty in the pattern to discuss timing," adds Gillham. "Above seasonal temperatures expected to dominate October, but there will be interruptions."
Check back for updates as we continue to monitor the forecast.