Environment and Climate Change Canada, a federal body covering weather and climate, shared the deep freeze figures on Twitter.

Environment Canada issued the extreme cold weather warning for Ontario Sunday morning, saying a 'period of very cold wind chills is expected.' 

Family and friends described Grant Triebner, 90, and Ada Triebner, 83, both of near Exeter, Ont., as "two beautiful lights" whose deaths shocked the small southwestern Ontario community, which like much of the country, is caught in the icy grip of an unusual cold snap.