The heat is back in Muskoka and with it comes a warning to be prepared.

Environment Canada is predicting the temperature could soar close to 40 with the humidity today. Stu McKinnon with Muskoka Paramedic Service says anyone spending time outside should be aware of the signs of a heat stroke.

“You could have dizziness with fainting, a headache, when it gets more severe you start to have confusion, nausea, vomiting, muscle cramps,” says McKinnon. “We’ve even seen people feeling totally fine up until later on, after spending the day in the heat.”

There is a chance of seeing some rainfall today, but it likely won’t cut down on the sweltering heat. McKinnon advises if you don’t need to be outside, you should stay indoors where it’s cooler.

“Drinking lots of water, staying cool is very important”.