depends on the brand. I have been using dupont paint for my thunderbird. I started on a saturday morninglast fall at 65 degrees. The interior was done in about two hours and came out nice and smooth. when I started the trunk and exterior later in the day the temp had dropped to 56. The side of the car was also out of the direct sunlight for most of the day. The paint just bubbled on contact with the metal. I have had that problem many times before with rattle cans and cold metal. At $100/unmixed quart I decided my bird can stay in the nest till spring.
I am far from an expert painter, but I was using low temp hardner/reducer a top end paint on clean sanded starlight primer. I have excelent results with the same combo in the past I had to assume it was the temperature.