Current weather conditions in Montreal
Tuesday, June 17 will bring a 30% chance of evening showers, wrapping up a warm and sunny afternoon. The high will reach 28 °C (82 °F), with a humidex of 30 and a very high UV index of 9. Overnight, the sky will become cloudy and humid, with a low of 18 °C (64 °F) and a risk of light precipitation by nightfall.
These spotty showers mark the beginning of a wetter pattern that will likely persist through to Friday, June 21, the first official day of summer.
STM service disrupted due to maintenance strike
On both Sunday, June 16 and Tuesday, June 17, the STM maintenance workers’ strike continues to affect bus and métro service across Montreal.
Service during peak hours will remain operational as follows:
Buses: from 6:15 to 9:15 a.m., 3:00 to 6:00 p.m., and 11:15 p.m. to 1:15 a.m.
Métro: from 6:30 to 9:38 a.m., 2:45 to 5:48 p.m., and 11:00 p.m. to 1:00 a.m.
Outside of these times, transit service will operate at up to 50% capacity, which will likely result in delays and limited frequency.
Week outlook
Monday, June 16 was the only fully sunny day in the forecast this week. Starting today, expect an increase in cloud cover and intermittent rainfall, becoming more frequent toward Friday.
The astronomical start of summer on June 21 is expected to coincide with humid and unstable weather, especially across southwestern Québec.


