Ontario's wacky weather weekend will include balmy temps and even thunderstorms

If you have plans this weekend, you might want to keep a close eye on the forecast, because Ontario's weather is shaping up to offer just a bit of everything. 

From springlike warmth to strong winds, rounds of rain, and even the possibility of thunderstorms, the province is heading to a particularly unpredictable stretch of weather this weekend that could also increase the risk of flooding in certain areas. 

According to the latest Weather Network report, this weekend's weather will bring a confusing mix of pleasant temperatures, windy conditions, showers, and occasional sunny breaks.

Cool start to the day across Southern #Ontario

Temps range from near 0C to -8C

Mild afternoon with temps in the low/ mid single digits

Next system starts to move in this evening- scattered showers/ line of non severe thunderstorms across SW Ont#OnWX #ONStorm pic.twitter.com/utsEhSHff7

— WxOntario (@WxOntario1) March 6, 2026

This weekend, temperatures are expected to climb well above seasonal averages, feeling more like late April or even early May in parts of the province, especially in southwestern Ontario, where daytime highs could hit 20 C. 

On Friday, Toronto is expected to see periods of rain and risk of thunderstorms, with total amounts of precipitation ranging between five and 10 mm. On Saturday, we can expect a high of 15 C along with a few showers set to begin near noon, as well as a risk of thunderstorms later on in the day. 

Sunday is shaping up to be much cooler with a high of 11 C in Toronto, although we'll get a break from all the precipitation, as sunny skies are expected to dominate throughout the day. 

Still, The Weather Network notes that, "Flood watches are in effect for all areas south of the French River due to the increasing temperatures and forecast rainfall. The combination of melting snow, rain, and frozen ground is contributing to heightened water levels, significantly raising the risk of ice jams along rivers in the region."

Make sure to enjoy the balmy temperatures while they last, because more Arctic air is expected to sweep in late next week or the week after. Before temperatures drop, periods of mixed precipitation are expected to impact the region. 

Although the official start of spring is just two weeks away, The Weather Network warns that the third week of March is expected to be "wintry," with the "possibility of significant snowfall in some areas."