Yes it is!
this lake is actually a flooded marsh with a river channel damed up a few miles down (10,000 acre mud flat). the old marsh land (now lake) is riddled with springs being shallow most normally go thru hitting a spring.
A few days of 40-50 is ok there’s 14-18” of ice, ive ice fished on 55* days. The big problem is rain and warm weather it’ll eat the shit outta the ice.
ive got a 1967 travel trailer with a wood burner in it, we’ve had it well into the triple digits in there. I don’t usually fish with out it unless it’s nice out.