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Frost in eastern Canada

Parts of eastern Canada may get hit with frost
Parts of eastern Canada may get hit with frost

Jill Colton, staff writer

October 5, 2010 — With temperatures cooling close to the freezing mark through the overnight hours, there's been the potential for frost in many parts in eastern Canada.

Frosty plants in Thunder Bay
Frosty plants in Thunder Bay

Get your hat, your gloves and your window scraper out of storage! You'll likely be needing them soon if you're in eastern Canada.

For the third time this week, Environment Canada has issued a frost warning for western New Brunswick. People could once again wake up to frost on the ground Wednesday morning.

But that's not the only province that has been feeling frosty. Temperatures plunged to the low single digits through the overnight hours this week in parts of southern Ontario. In the northern part of the province, temperatures below freezing were recorded. That made for ideal frost conditions at the start of the week.

“When you get clear skies, calm winds and temperatures near zero, frost is likely to develop,” explains Brian Dillon, a meteorologist at The Weather Network.

Frost warnings were issued for parts of Ontario, Quebec and western New Brunswick Sunday night, following a day a below-seasonal temperatures.

Goodbye, summer lawn
Goodbye, summer lawn

The chilly conditions have come in step with shorter days and less daytime heating. In the summer, the sun's rays hit the Earth in a way that optimizes heating. But now that it's fall, the sun is radiating at a different angle. “You don't get that intense heat, as you do in the summer,” says Michelle Cassar, a meteorologist at The Weather Network.

It may be cool enough for frost, but it will likely be another couple of weeks before major cities in eastern Canada see their first significant snowfall.

“It wouldn't be unheard of for this time of year,” says Dillon. “However, if temperatures remain cool, some communities could soon start seeing flurries in the overnight hours.”

For the latest details on the weather in your area, head to the Canadian Cities Index.

You can also check out the 2010 Fall Outlook for an idea of how much rain you can expect this season.

With files from Lyndsay Morrison and Lisa Varano

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