Montreal under severe thunderstorm watch, facing more wet weather this long weekend
Posted May 16, 2025 8:39 am.
Last Updated May 16, 2025 4:51 pm.
Montrealers hoping to spend the Victoria Day long weekend outdoors may need to revise their plans, unless they’re happy with singing in the rain like Gene Kelly.
Environment and Climate Change Canada (ECCC) is forecasting a stretch of wet weather ahead, but Friday began mainly sunny.
The city saw an increase of cloudiness near noon, then a few showers beginning late this afternoon — with Montreal put under a severe thunderstorm watch.
“Conditions will be favourable for the development of severe thunderstorms capable of producing strong wind gusts, large hail and heavy rain this afternoon,” said the weather agency.
When thunder roars, go indoors!
ECCC explained that strong wind gusts can damage trees, buildings and overturn vehicles.
“When thunder roars, go indoors,” they added. “Lightning kills and injures Canadians every year.”
Heavy rain can cause flash flooding and significant reductions to visibility.
Large hail, ECCC said “can cause significant damage and injury.”
Despite the rain, it is set to be warm with a high of 28°C — feeling more like 33°C with the humidex.
Come Saturday, mainly cloudy with showers or thunderstorms beginning near noon.
About 15 to 25mm of rain is expected to fall — the daytime high, 23°C.
The wet weather is then expected to continue into Sunday with a high of 17°C.
On Monday, as many will be enjoying the extra day off, a 30 per cent chance of showers is forecasted — with a high of 12°C.
