Muskoka health officials want you to be ready for the extremely cold temperatures this week.

The Simcoe Muskoka Health Unit says you’ll want to stay inside as much as possible when the temperature dips below minus 30. If you have to be outside, cover up as much exposed skin as possible with hats, gloves and a scarf. When the temperature gets extremely low frostbite can set in within minutes and you could also become hypothermic. Skin affected by frostbite will turn blue or gray and will feel hard and waxy to the touch. Officials say if this happens you should get inside right away and soak the area in lukewarm water. If someone you know is suffering from hypothermia, call 9-1-1 and try to warm them up as much as possible.

Environment Canada is expecting the frigid temperatures to hang around until the start of January.