Another thing to consider about seasonal painting is the amount of daylight. When the days are short, there is less daylight available to aid in drying. If you're using a solvent-based paint, which dries by oxidation, daylight is especially critical. So, be sure to paint early in the day so that light is present to add in the drying process. Also consider the effect of heavy dew.
Humidity affects the drying time of all paints, but especially latexes.
Most manufacturers recommend that at least two hours be allowed for paint to dry before sunset if cool temperatures and heavy dew are expected that evening. Finally, keep in mind that cooler temperatures may extend the time before the paint reaches serviceability or hardness. An enameled door requires more time before it can be closed without sticking to the jamb. A clear coating applied to a deck will need more time before you can walk on it. Primers require more time before top-coating.