what are you painting with? and what is the outside temperature.
My recomendation would be to spray it outside, then bring it in where its warm. If its to cold virtually all paint products will have issue if they are in the cold during the most critical phase, that being the time immediatly after application

Hi, I don't know what kind of paint you use, but I've sprayed dope down to 20 below. I have everything ready to go and take the plane outside and paint. I bring the part sprayed immediately into the shop. I've never had a problem with drying, or adhesion  with successive coats. I live in North Dakota and a benefit of spraying in the winter is super low humidity. As a disclaimer, I've never sprayed any  other type of paint except dope as stated before.  Another benefit is there aren't any bugs or dust! Cheers,Doug