Bossman757

I haven't experienced this issue untill just recently. The past 3 nights have been more cold than usual and all 3 mornings my car would not start. It's not the battery however the fact that by mid day after it warmed up my car started fine on everyone of these past 3 days make me think the cold is the problem. Can anyone tell me what could be affected by the cold and lead to my car not starting while frozen?