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Ontario: Warm surge will chase away snow this weekend

Saturday, December 7th 2019, 7:37 pm - You might want to take advantage of the mild and sunny Sunday coming to southern Ontario.

The second half of the long weekend will usher in a couple of days of markedly milder temperatures, noticeably above seasonal -- perfect for people hoping to finish their outdoor holiday decorating. However, on Sunday's heels will be a soggy system that will make for a wet Monday for the south, and snow in the north. Details and timing, below.


WEATHER HIGHLIGHTS:

  • Sunny and milder Sunday, making for the best chance to put up Christmas lights or decorations
  • Soggy system will bring rain, wet snow on Monday
  • Stay up-to-date on the ALERTS in your area

IDEAL WEEKEND FOR OUTDOOR DECORATING

After a still-frosty Saturday, Sunday will be the weekend showstopper. Gusty winds from the southwest will give temperatures a boost ahead of the next incoming system, with afternoon highs edging toward double-digit territory.

"If you still plan to put up lights for Christmas, this is your day to do so," says Weather Network meteorologist Dr. Doug Gillham.

Icons OntarioGTA1 Day3

THE NEXT SOGGY SYSTEM

The mild air won't be with us for long, however, as another Colorado low looms for the start of next week. Rain showers will begin to spread across southern Ontario by Sunday night and will continue through Monday.

On Monday evening temperatures will be above freezing and the rain will fall on mostly frozen ground, which could result in a fair amount of runoff and pooling water. Rainfall amounts currently suggest between 5 to 10 mm of rain for across the GTA and the Ottawa Valley.

Ontario rain

Due to cooler temperatures, regions in northern Ontario will see between 10 to 20 cm of wet snow, beginning Sunday night and lasting into early Tuesday morning in some areas.

Ontario snow

A strong cold front will then send temperatures tumbling by Tuesday and will freeze the wet precipitation on the ground. Heavy bands of lake-effect snow are once again expected in the snowbelt regions as we head into Wednesday.

A LOOK AT THE REST OF DECEMBER

As for December overall, "changeable" will be the best way to describe the pattern shaping up in the coming weeks.

"But changeable patterns are often active patterns, and we expect that this December will have more winter storms than we saw last December," says Gillham.

Read more on the 'wild card' month of December, here

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