From a summer-like sizzle to snow, April continues to live up to its reputation as a month of wild weather swings.
After several days of 20°C temperatures, and even reaching Canada's first 30°C temperature of 2023 last week, likely to the dismay of many southern Ontarians, snow and a dramatic cooldown returned to start out this week.
Now the big question remains: Will we continue to see cooler temperatures accompanied by spring snow, or will the teases with summer-like weather and 20°C days return? The answer is...both!
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As we head towards the end of the week, a weak ridge in the jet stream will allow for temperatures to climb back to seasonal and above, with areas in southwestern Ontario likely reaching 20°C as early as Thursday, and more places towards eastern Ontario reaching 20°C by Friday.
For parts of the Greater Toronto Area (GTA), an east wind off of Lake Ontario will jeopardize Thursday's warmup and keep temperatures from reaching the double digits and sitting around 10-13°C.
Warmer weather will briefly spread across the region on Friday, ahead of a cold front and a Colorado low tracking north. The warmup will also come with a catch this time, however, as rainy conditions will accompany these milder temperatures, especially on Friday and into the weekend.
Moisture from the Gulf of Mexico will get drawn up into a couple of lows that are forecast to track through and bring rounds of rain.
Saturday will be a mostly soggy day, with a widespread soaking rain and between 10-20+ mm forecast through the weekend. Several areas are currently under flood watches and warnings, and this additional rainfall could heighten those flood concerns.
Cooler temperatures and the return to snow as we end April
As the low-pressure system pushes off towards the east, cold air will once again get drawn south into early next week, possibly bringing more snow flurries, blustery conditions and chilly temperatures to southern Ontario.
Near seasonal or cooler than seasonal temperatures are expected to dominate through the end of April and into the beginning of May.
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Heavy snow threat across northern Ontario, again!
An active storm track will continue to take aim at parts of northern Ontario to end this week, with a heavy swath of snow and difficult travel expected. A Colorado low will track to eastern Lake Superior on Friday, with a powerful spring snowstorm on tap for northwestern Ontario. Widespread snow totals of 15-25 cm are likely from Thunder Bay to the Manitoba border, with 10-20 cm of snow expected north and northeast of Lake Superior. This storm will have a major impact on travel across the Trans-Canada Highway, with periods of blowing snow making for treacherous conditions.
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Stay tuned to The Weather Network for the latest on conditions across Ontario.