Weather Watches, Warnings and Advisories



  • Innisfil – Essa – New Tecumseth
  • York – Durham
  • Peel – Halton
  • Toronto

First heat event of the season continues this week.

Temperatures will soar again to near the thirty-degree mark today and Wednesday. Indications suggest above normal temperatures near thirty again on Thursday.

Humidex values in the mid to upper thirties will prevail each afternoon. Some relief is expected near the shorelines of the Great Lakes.

A cold front will deliver considerably cooler and less humid air to Southern Ontario on Friday.

Extreme heat affects everyone.

The risks are greater for young children, pregnant women, older adults, people with chronic illnesses and people working or exercising outdoors.

Drink plenty of water even before you feel thirsty and stay in a cool place.

Never leave people or pets inside a parked vehicle.

Heat warnings are issued when very high temperature or humidity conditions are expected to pose an elevated risk of heat illnesses, such as heat stroke or heat exhaustion.


  • southern Kawartha Lakes

Hot daytime temperatures expected Tuesday through Thursday.

Daytime highs in the low thirties are expected however night temperatures will drop below 17, giving some relief to the heat. The regions are being monitored for a possible heat warning however at this time the main concern is afternoon high temperatures. Humidex values may also be in the high thirties.

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