Residents who spent Saturday basking in 31°C heat may need to dig out frost covers before bed.
Environment Canada is warning of a low of plus 2°C overnight, with a risk of frost in the Airdrie region — a sharp drop of nearly 30 degrees from the day’s high.
The sudden dip comes amid a fast-moving air mass expected to clear skies after a brief chance of evening showers and thunderstorms.
Northwest winds up to 40 km/h will taper off Sunday night, allowing cooler air to settle over the region. Forecasters say the risk of frost is real — especially in low-lying or exposed areas.
Sunday’s daytime high is forecast at 15°C, with sun giving way to a 30 per cent chance of late-afternoon showers and another risk of thunderstorms. The UV index will remain high at 6.
Overnight lows are projected to hover just above freezing for the next several nights:
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Monday night: plus 3°C
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Tuesday night: plus 2°C
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Wednesday night: plus 2°C
Temperatures are expected to climb later in the week, peaking at 21°C by Thursday before cooling slightly ahead of next weekend.
Gardeners and farmers are advised to monitor sensitive plants and consider frost protection measures. Environment Canada has not issued a formal frost advisory for Airdrie and the surrounding areas as of Sunday afternoon.
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