I did experience too cold to fish up in Wisconsin.
I lasted 1 hr in a portable shanty.
-5 and wind gust up to 35. The last straw was when my tip up went up and I shot a cross the ice to check it and and looked back and saw my shanty tumbling end over end back into the cove. Heater was still sitting on the ice though. I'm glad that buddy didn't flip with the shack and burn a hole through the canvas.
Too cold to fish that day.