Summer weather pattern develops in Montreal

A ridge of high pressure will push the first real round of hot and humid weather of the year, into southern Ontario and Quebec over the weekend and into next week. (AccuWeather.com)

Warm temperatures will make a much anticipated return to southern Ontario and Quebec over the next few days. The warmest air will be across southwest Ontario into New England, where highs could easily settle into the low to middle 30s by Sunday. The scenario is not as clear here in southern Quebec, where a few ridge runners, fronts moving along the periphery of warm high pressure, may give us some showers or thunderstorms. All is good for Thursday evening, with clear skies in Montreal and mild overnight lows in the middle teens. On Friday, we expect abundant sunshine, but with afternoon clouds and perhaps a scattered shower or thunderstorms. The high temperature will be  a little cooler than Thursday, around 24C (76F).

Crews did their best to keep the cars running during a deluge at the Canadian Grand Prix in Montreal in 2011.

The Canadian Grand Prix events taking place this weekend, will benefit from a decent forecast. Saturday appears perfect at this time, with nothing but sunshine, and temperatures near 26C (80F). Sunday is a little suspect at this time. It will be warm and humid, near 30C (86F), but with a decent chance of afternoon thunderstorms, some of which may put down a quick deluge of rain. Of course the Canadian Grand Prix is no stranger to thunderstorms, with the 2011 race taking place in a flash flood at Circuit Gilles Villeneuve. Heading to the track this weekend bring plenty of water, sunscreen and perhaps an umbrella as well. Warm and humid weather is forecast to persist into next week, with numerous showers and thunderstorms and temperatures in the mid to upper 20s.