Painting in the cold weather

I am making an offer on a house today and it needs exterior painting. It has aluminum siding. The problem is that it is around 30 degrees average forecast for the next few weeks and will only get colder. Do they make paints for colder weather and how cold can it be to paint with this? Any idears??

If you go to Sherwin Williams, Benjamin Moore or any commercial paint supply store they have great cold weather exterior paints. I painted an aluminum sided mobile home last Feb. and it came out great. DO NOT GO TO HOME DEPOT. The employees at professional paint supply stores are worth thier weight in gold. Most of them are ex/pro painters who got tried of painting houses. They know the products and they can give you great application advice.