Published on Apr. 12, 2026, 12:21 AM

Bouts of heavy rainfall will accompany temperatures in the 20s in the days ahead

Be sure to grab your umbrella before heading out over the next couple of days as a warmer pattern pushing into southern Ontario will bump up the chance for heavy rainfall.

Some areas could see as much as 100 mm of precipitation through the week ahead.

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Temperatures and rain odds rise into next week

An active and unsettled pattern is in the forecast over the next couple of days. Several systems are expected to sweep across southern Ontario, including surges of remarkably warm temperatures for the middle of April.

Ontario Rainfall Next 7 Days

The first wave of heavy rainfall will accompany a warm front lifting across the region on Sunday afternoon.

We’ll see the heaviest pockets of rain target cottage country and communities surrounding Georgian Bay, where amounts could locally push 30-40+ mm. Additionally, a chance for thunderstorms will build Sunday night into Monday around and north of cottage country.

Folks around the Greater Toronto Area (GTA) can expect generally less than 10 mm of rainfall, with higher amounts up to 20 mm across northern sections of the region.