I wash my car more in the winter than I do in the summer. After a snow storm, and after the roads have dried, I go to the local self-serve wash with a bucket, (2) wash mitts and shampoo. First I rinse the car and then fill the bucket with water, add shampoo and top off with a blast of water for suds. I wash the entire car with the wash mitt and finish the wheels with the second wash mitt. I next rinse the bucket, rinse the car and fill the bucket with warm water. I dry the car with a P21S drying towel; I rinse the towel in the warm water frequently.
As far as detailing I have access to a 72 degree garage.