A warm front associated with low pressure to out west is moving into the St. Lawrence Valley this evening. Ahead of it showers and thunderstorms will develop and produce a steady rain overnight in Montreal, Ottawa and Kemptville. The rain will taper to scattered showers on Friday and it will be muggy and quite warm. Late in the day a cold front will trigger some thunderstorms before much cooler and dryer air arrives for the weekend.
Ahead of the cold front on Friday strong southwest winds will develop and gust to 60km/h. In the Richelieu Valley of southern Quebec they may gust over 90km/h. A Wind Warning has been posted for that region.
High pressure will clear skies out on Saturday, it will be breezy and much cooler with temperatures around 13C.
**Today Montreal reached 21C, tomorrow will be mild as well, close to 20C in most areas prior to the cold frontal passage.
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