My coldest hike ever was on the Sleeping Giant SP Tower Road and a couple of side trails on January 15, 2011, tree days after the deepest snow ever recorded in CT. It was single digits, maybe 8* F when my friend and I started. Was fun post-holing the upper 0.6 miles or so, past the chin, where most before us had turned around. The snow was a couple feet deep and mostly untouched up by the tower. Winter wonderland - got some nice pics that day. We were well clothed and didn't get cold so long as we kept moving.