Heat warning in effect for Windsor-Essex, Chatham-Kent as humidex nears 40 C

Environment Canada has issued aheat warning for Windsor-Essex and Chatham-Kent and it's expected to continue into Monday night.

Daytime temperatures will increase between 31 and 34 C with humidex values nearing 40 C, according to the weather authority.

Overnight lows will provide "little relief from the heat" with Environment Canada forecasting them to fall between 20 and 22 C.

A cold front is expected to move Tuesday through southwestern Ontario, bringing with it showers, thunderstorms and "an end to the heat and humidity."

A previously-declared heat alert from the Windsor-Essex County Health Unit was called last Mondaybut ended the next day.

More from CBC Windsor: