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Protect your health during extreme cold

Jan 23, 2026
SIMCOE MUSKOKA — A significant cold event is forecast for the region in the coming days, marking the first of the season. While freezing temperatures and snow are a part of winter, extreme cold can be dangerous to your health. Environment and Climate Change Canada issues extreme cold warning when temperatures or wind chills drop below thresholds for at least two hours within a 24-hour period. These thresholds are -30ºC for Simcoe County and -35ºC for the District of Muskoka.

SIMCOE MUSKOKA — A significant cold event is forecast for the region in the coming days, marking the first of the season. While freezing temperatures and snow are a part of winter, extreme cold can be dangerous to your health. Environment and Climate Change Canada issues extreme cold warning when temperatures or wind chills drop below thresholds for at least two hours within a 24-hour period. These thresholds are -30ºC for Simcoe County and -35ºC for the District of Muskoka.

The Simcoe Muskoka District Health Unit reminds everyone that exposure to extreme cold can cause frostnip, frostbite, and hypothermia, conditions that can be severe and even life‑threatening. Cold weather can also worsen existing health issues like heart or lung problems. People who are most at risk include those without housing, older adults, babies and kids, people with health problems, and those who work or spend long amounts of time outside.

Cold-related injuries can be prevented by following some simple steps:

  • Check the weather before you go out and adjust your plans for the conditions.
  • Learn about the signs and symptoms of frostnip, frostbite and hypothermia and what to if they happen to you or someone in your care.
  • Dress for the weather by wearing layers, a “wicking” inner layer, a warm middle layer like a sweater and a wind-resistant outer layer, wear a hat, gloves or mittens, a scarf, warm socks and waterproof boots.
  • Stay warm and dry, if possible, change into dry, warm clothes if you get wet or sweaty.
  • Seek shelter from the wind and cold and take regular breaks from the cold. Drink warm liquids (avoiding alcohol and caffeine) to warm up.
  • Check in on friends, family and neighbours to ensure they are warm and safe (indoors and outdoors).
  • Have a winter emergency kit with cable jumpers, extra blankets, and warm clothes in your vehicle.
  • Keep indoor temperatures comfortable, between 18°C and 21°C. Even moderate indoor and outdoor cold temperatures can have an impact on your health.

Warming spaces are available throughout Simcoe Muskoka to provide relief from the cold. They are usually found in municipal buildings, libraries, and community centres and open to the public during regular business hours. To find relief from the cold near you, visit the County of Simcoe and District of Muskoka’s websites.

For more information about cold and its impact on your health, visit smdhu.org/cold.

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