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Enjoy the breather. Heat, humidity expected to return Tuesday

Humidex values in the mid 30s in the forecast through Thursday
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Heat Warning in effect for:

    •    Blind River - Thessalon
    •    Espanola - Killarney
    •    Manitoulin Island
    •    Elliot Lake - Ranger Lake
    •    Greater Sudbury and vicinity

A brief cool down tonight then the heat returns for most of this week.

Daytime temperatures will be near 30 degrees again Tuesday through Thursday, with humidex values in the mid 30s. Low temperatures overnight will be in the high teens to low 20s providing little relief from the heat. Temperatures near the lake shores will be cooler.

Another cool down is expected by Friday with the passage of another cold front.

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.

Watch for the effects of heat illness: swelling, rash, cramps, fainting, heat exhaustion, heat stroke and the worsening of some health conditions.

Never leave people or pets inside a parked vehicle.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to or tweet reports using #ONStorm.