My lovely wife bought me an overhead directional heater as a possible solution to my uninsulated garage gym. Today the temperature in the garage is -13 degC. Too cold to train. The heater cut the cold just enough to make the work out ok.
Bench Press - 2 sets/12 reps/135lbs, 225lbs/8 reps, 315lbs/6 reps, 335lbs/4 reps, 355lbs/3 reps, 365lbs/1 rep, 3 sets/3, 3, 4 reps/315lbs.
Done up in sweat pants, hoodie, and gloves I was quite comfortable. I'm not sure I'll be doing Squats or Deadlifts but Bench Press will be surely a go despite the temperature.