I'm in Florida now. Coldest temps predicted here for tonight since I've been coming here (15 years). Low is to be 31. The local channels have a continuous upper banner with info on the freeze warning. Bring in your pets, cover your plants etc. It seems a bit over the top to me, but it's an extreme weather event for the area, so, okay.
But they also have a 5 county map in the upper corner with radar, then alternating with solid blue, indicating freeze warning. Does radar show anything related to temperature? I've never known it to.