Unsettled weather week for Montreal - strong thunderstorms possible Monday

Unsettled weather is expected to end the month of May in Montreal. We can expect showers and thunderstorms through mid week, with a few sunny breaks at times. Temperatures will be warm to start the week but cool off behind the storm system. 

We have an unsettled and at times stormy weather week ahead for southern Quebec. Strengthening low pressure will slowly move across the central Great Lakes and into far western Quebec over the next 24 hours. The low will then move across central Quebec most of the upcoming week before lifting into the north Atlantic.

The system will drag a warm front into the St. Lawrence Valley on Monday, accompanied by a warm and humid airmass and gusty southeast winds up to 60km/h. Temperatures will rise into the low 20s Monday, capped somewhat by clouds and precipitation. Some showers and thunderstorms are likely early Monday morning, followed by another round late in the day. The afternoon storms may be strong, with heavy rain and gusty winds possible. 

There is even the chance for some small hail along the Quebec/Ontario border, and some indications that a few of the storms may even develop rotation. If you have outdoor plans, pay close attention to the latest forecast and any watches or warnings that may be issued.

The balance of the week will remain unsettled, with showers and thunderstorms through Wednesday. Cooler temperatures will return as well for Wednesday and Thursday, before we clear out an warm up into next weekend.