Cold weather flooding

Still driving my parts car... '88 Grand Fury, 318 Quadrajet 4 bbl. During warm weather it starts and drives a-ok. During cold weather which is now setting in, when I start it in the morning it runs so rich that it acts like it's running on 5 or 6 cylinders. At noon I start it and it runs ragged, I drive to the post office (1/4 mile). When I start it there it runs fine for the rest of the day.
Any suggestions for a simple fix?
Author: admin