In reply to girlymonkey:
You will feel better afterwards if you do it, but don't beat yourself up if you don't. there's always another day when it won't be raining.
It is embarassing how often I have driven somewhere nice, typically on the way home from work, got changed in the car, got out of the car, felt a splash of rain on my nose, or saw a whisp of cloud in an expanse of blue sky...then got back in again and and gone home.