Parade of snowy systems take aim at Ontario this week
A series of quick-moving Alberta clippers to bring snow bursts and cool temperatures to Ontario this week
Gusty winds and lake-effect flurries will create travel challenges across parts of Ontario on Tuesday. While significant snowfall accumulations are not expected, drivers should prepare for sudden changes in visibility and potentially hazardous road conditions due to blowing snow.
Looking ahead, a series of fast-moving storms are set to impact Ontario as the week progresses. These systems follow a shift in the national weather pattern, putting the region in the path of an active storm track leading into the weekend.
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Stay updated for further details as these systems develop, including potential impacts to travel and outdoor plans. Be sure to keep an eye on the road conditions before heading out, as well.
Active storm track brings multiple clippers to Ontario this week
Mild Pacific air, driven by an ongoing atmospheric river in B.C. and a high-pressure system in the western U.S., is influencing Ontario's approaching weather pattern.
Starting Thursday, multiple Alberta clippers—fast-moving systems with relatively light precipitation—are expected to impact Ontario, bringing a mix of rain and snow.
The first system arrives Thursday, delivering 3-5 cm or less of snow in snowbelt regions, cottage country, and areas east of the Greater Toronto Area (GTA). A rain-and-snow mix is projected for the western GTA and southwestern regions.
A second clipper moves in Friday, with flurries and possible rain across southern Ontario.
Another system follows Saturday, likely bringing flurries to northern areas and rain to southern and eastern Ontario. A final clipper is on track for late Sunday into Monday.
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Behind each clipper, colder air from the northern Prairies and northern Canada typically settles in, keeping temperatures near or below seasonal. Toronto’s average daytime high for this time of year is 5°C.
While snowfall totals remain uncertain, forecasters have high confidence in the active clipper pattern continuing into early next week. Precipitation types will depend heavily on the exact storm tracks, so stay updated for further developments throughout the week.