Montreal

Montreal to face downpour, thunderstorms days after record-setting heat

After braving a record-setting heat wave days ago, Quebecers will be staring down a weekend of thunderstorms.

30 to 50 mm of rainfall expected this weekend

Car drives through puddle
A motorist drives through standing water in Montreal on March 30, 2025. (Graham Hughes/The Canadian Press)

After braving a record-setting heat wave days ago, Quebecers will be staring down a weekend of thunderstorms.

Environment and Climate Change Canada (ECCC) issued a special weather statement on Thursday, forecasting between 30 to 50 millimetres of rainfall in parts of western, southern and central Quebec from Friday to Sunday.

The heaviest rain is expected to fall Friday evening to Saturday evening, according to ECCC.

Montreal is expecting a downpour the same week the city's temperatures hit 35.6 C, breaking the all-time high for June set 61 years ago.

The previous monthly high of 35 C was set on June 30, 1964, recorded at Montreal's Trudeau Airport, where records have been kept since 1942.

ECCC says more rain from thunderstorms might lead to total rainfall amounts in the Montreal area exceeding 50 millimetres.

 

"Some rivers may see an increased flow and higher water levels," reads the ECCC statement.

Regions affected by the special weather statement include: 

  • Montreal.
  • Montérégie.
  • Eastern Townships.
  • Bois-Francs.
  • Lanaudière.
  • Laurentians.
  • Outaouais.
  • Témiscamingue.

With files from the Canadian Press