moste primers are to be a[pplied above 50 degrees F per their manufactures. most of the newer latex paints can be applied at a temperture of 35 or above. within reason, the warmer the temperature, the easier it is to apply the paint and the faster it will dry

JMHO

Carl

First off primer is not made to weather longer than 30 days without a topcoat over it. So you don't want to just scrape and prime and leave ti until the spring.

There are several exteriors paints made to apply down to 35 degrees (Duron & Sherwin Williams for example) but do have limitaions but generally do just fine. Your painting time will be limited to 3 to 4 hours a day to allow the surface to warm up and allow the paint to dry before night tempratures cool of.