WEST CARLETON – Here comes the heat as Environment Canada issues the summer’s second heat warning.

“Significant heat and humidity will arrive on Friday,” Environment Canada released in a statement this evening (July 18). “Daytime temperatures in the low to mid-30s with afternoon humidex values of 40 or higher and night time minimum temperatures in the low to mid-20s are expected for Friday and Saturday.”

Although thunderstorms are being forecast for Friday, it could also be the hottest day of the year forecasters are saying. Storms are expected Friday morning, clearing by the afternoon with the heat moving in after that. The high is forecast to be 33 degrees Celsius but feel more like 41. Saturday is expected to be 33 and feel like 42. There is a risk of strong thunderstorms being called for Saturday as well. A cooler and less humid air mass is forecast to arrive in the wake of a weak cold front Sunday.