Digital Writers of theweathernetwork.com
ONTARIO — Conditions are favourable for the development of scattered thunderstorms on Saturday.
A cold front tracking through southern Ontario will continue to bring some scattered severe thunderstorms before tapering off and allowing for more pleasant conditions to move in for the end of the weekend. Sunday will feature abundant sunshine, low humidity, and near seasonal temperatures. These warming conditions will be the start of a scorching week due to heat moving in from southwestern desert regions in the United States and Pacific moisture streaming eastward. Details on who will soon see humidex values at or near 40, below.
After Saturday’s isolated downpours the sunshine will finally move into the majority of the region on Sunday. Temperatures will hit the mid-to upper 20s for much of the southern portion of the province as the high pressure system tracks in.
“Sunday will be a gorgeous summer day with abundant sunshine, near seasonal temperatures and low humidity,” said Weather Network meteorologist Dr. Doug Gillham.
“Tuesday and Wednesday will bring increasing heat and humidity with high temperatures reaching the lower 30s and the humidex soaring into the lower 40s,” Gillham says.
Heat tracking in from desert regions of southwestern United States plus low pressure systems moving eastward across Canada will bring converging moisture that will create highly humid conditions. A number of cities could reach a humidex value of 40.