‘Extreme cold’: Greater Toronto and Hamilton Area could see -30 wind chills overnight CTV NewsParts of GTA under yellow cold warning overnight into Monday morning: Environment Canada CBCWind chills of up to -30 expected this morning Guelph NewsCold weather alert: Frigid temperatures coming to Hamilton The SpecBone-chilling start to the week, wind chills hit -30 C across Simcoe Muskoka CTV News
