If you were hoping that Montreal weather in May would make a smooth transition from spring showers to summer sunshine, you might want to adjust your expectations. The city is set for a rollercoaster ride of weather patterns this month, with forecasts swinging from cool drizzles to mild sunny days.
The Weather Network predicts that while we're past the peak of April's heavy rains, May will not be exceptionally dry or warm. The shift to a northwesterly wind pattern reduces the chance of rainfalls but showers are still likely, especially during the first week.
According to Environment Canada, a mix of sun and clouds on Friday and Saturday, temperatures hover around the comfortable 19 C mark. Sunday will see the onset of rain, likely lingering into Monday, accompanied by slightly cooler temperatures at 18 C. Montrealers can expect a washout on Tuesday with showers, and Wednesday has a sunnier outlook with a 60 percent chance of showers high of 25 C.
According to MétéoMédia, the warmth many anticipate with the arrival of May will be slow to set in. The forecast suggests pleasant temperatures at the start, but no heat waves in sight. While the early May weather will be mild enough for outdoor activities, a consistent warm trend won’t manifest until later in the month, according to Meteorologist Réjean Ouimet.
By mid-May, a drop in temperatures could bring unexpected chills and even late frosts, possibly endangering spring gardening and late bloomers. The cooler spell is expected to last until nearly the end of the month, with the temperature fluctuating below what’s typical for this time of year.
However, there's a light at the end of the tunnel. Towards the end of May, weather models predict a possible shift that could finally bring warmer air into the region. That could mean that by the month’s close, temperatures might edge above average, particularly in western parts of Ontario and Quebec. Eastern Quebec, however, might still experience cooler-than-average temperatures.
The inconsistent weather this May means Montrealers should be prepared for a bit of everything. While it may not be the ideal start to summer many hope for, the month will still offer enough mild days to enjoy some time outdoors. Just don’t put away your warmer layers yet; you’ll likely need them even as the month winds down.
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Environment Canada seven-day forecast for Montreal.