Last week was damn cold for us here in Illinois.
My 96 Dakota which will normally roast me out of the cab was lukewarm one morning. Which I thought was weird.
Most of the drive is straight south about 20 miles, the wind was heavy out of the west
The last 7-8 miles is driving east. As soon as I made that left turn and headed east I had heat again when that wind was behind me instead of to my passenger side. I don't ever remember that truck being real drafty but that day as I drove south I had a pretty good draft out of the passenger door. But not since. Heat is back to a blast furnace