Residents across Waterloo region, Guelph and Stratford are facing another blast of extreme cold this weekend as Environment Canada has issued a yellow cold warning for the area.

The federal weather agency says wind chills of up to -30 are expected Sunday night continuing Monday morning.

“Extreme cold puts everyone at risk,” Environment Canada said in its alert, noting heightened dangers for young children, seniors and those without adequate shelter.

Sunday will see a high of -13 C, though it will feel significantly colder. Wind chills may reach -30 at times before improving slightly to around -20 later in the day. The risk of frostbite remains high, particularly on exposed skin.

Overnight, temperatures will to drop to -24 C, with wind chills near -30.

Monday will remain cold, with a high of -10 C and wind chills again approaching -29 in the morning. Temperatures are expected to ease a bit later in the week, with daytime highs approaching zero by Tuesday, although the area could still see the occasional flurry.

In its warning, Environment Canada urged residents to dress warm and limit time outdoors. The agency also recommends checking on vulnerable family members, friends and neighbours and keeping emergency supplies, such as blankets and jumper cables, in vehicles.