Perhaps it is just my imagination, but it seems like Great Falls, Montana is always warmer than anyplace nearby in the winter.
Is there a giant heater at Malmstrom AFB? East, west, south... all colder.
Oh, it's that 32°F between the 10° and the -12°. It's like a natural heat sink or something. Right under the first "r" in "Temperatures" for those of you out east.