No, fix it quick Sins. If you don't you'll be fixing the drywall or plaster on your ceiling and your trusses will start to rot. Get some wet or dry roof patch from Home Depot. Go up in your attic and locate as near as possible the leak and drive a nail through it so you'll know where it is on the outside. Remember that water runs downhill and look above the apparent breach for signs of the trickle. Tar that baby up real good and thorough and mebbe it'll last you til spring thaw. Don't let it go for long or you'll need to fix a lot more than the leak and be even more pissed off. The stuff doesn't cost much and will set up even if it's somewhat moist. Just smear it in with a vengeance with a small mason's trowell and don't forget yer gloves!

Yerz,
Tweed