Published on May. 21, 2026, 8:57 PM
A significant temperature swing is in progress across the eastern half of the country to end the week
Many communities across Eastern Canada notched their warmest day of the year this week as a summer-like pattern built across the region.
This unseasonable warmth wasn’t long for the world as a strong cold front sends temperatures crashing down into the single digits.
Widespread frost advisories are in effect heading into Thursday night.
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A hot pattern falls victim to a strong cold front
Southwesterly winds teamed up with an upper-level ridge to pump warm, humid air into Eastern Canada through the first half of the week.
Halifax Stanfield Airport reached 30.3°C on Wednesday afternoon, making this the earliest 30-degree reading ever observed at the location. The previous record was a 32.6°C day back on May 22, 1992. Numerous other daily high temperature records fell across the region.
A fresher airmass has settled into the region to end the week, bringing less-humid conditions and near-seasonal temperatures. Some areas are running 2-5 degrees below seasonal for the next couple of days.