WEEKEND WEATHER: Warm days, cooler nights forecast for southern Ontario

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Published June 18, 2026 at 3:05 pm

weekend weather ontario

After some rainy, stormy weather, the weekend is looking beautiful in southern Ontario.

Special weather statements for thunderstorms, wind and heavy rain were issued this week.

The first day of summer is this Sunday, and the weather will likely reflect the season.

On Friday, a mix of sun and cloud is forecast with a high of around 23 C in Toronto, Mississauga, Brampton, Oakville, Burlington, Hamilton and Durham Region, according to Environment and Climate Change Canada.

With the humidex, it could feel like 25 C. A low of around 13 C is expected in the evening.

Sunny skies are forecast for both Saturday and Sunday.

A high of 24 C and a low of 11 C is forecast for Saturday.

On Sunday, the first day of summer, a high of 25 C is forecast with a low down to 13 C.

Normal highs for this time of year are around 24 C, and lows are typically around 13 C, according to Environment Canada.

The Weather Network is forecasting a 30 per cent chance of rain on both days, and rain appears to be back in the forecast next week.
weekend weather ontario

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