I applied the sealant to this car, but it was about 4 months ago and there does not appear to be any water beading at this point. I could park it in my garage over night, (wife gets the garage spot normally) but it’s not sealed that great and it gets pretty cold in there. I guess I would have to wait until the temps rise to about 30-40 outside which would hopefully mean my garage is 50 or higher.
Good idea about applying it shortly after driving though, especially after running the windshield defroster.