Yup last couple times I just hosed the car off at apartment since hose is in my garage so it doesn't freeze, but it was upper 30s so I wasn't as concerned about a sheet of ice right outside my garage. Seeing temperatures only seem to go up on days it snows right now thought I'd give the pay and spray a try so I could at least give it a rinseless wash and get off all the salt and dirt.
Not sure I'm going to be able to clean the undercarriage though, seeing from what I can tell the wand is at a fixed angle and this car is fairly low
Warm water definitely helps. Got lazy last time and didn't want to haul the full bucket down the stairs so just filled with hose, it was cold