Stop in for a cup of coffee

So i was warming up the fargo, moved some snow, parked firebird in the shed. Got into fargo and gauge was at 240 degrees i think(no glasses on) and it didnt boil over. I think the gauge is off. Way off. But cab was toasty!
I started the hemi, let it run for 30 minutes, only hit 132, drove to town and back, 146.