A significant early season winter storm is going to unfold over the next 48 hours across the mid-Atlantic and Northeast with heavy snow from parts of the central Appalachians into New England. For North Carolina the main impact will be rain and some gusty winds and very cool temperatures for late October. There is the chance for some light wintry mix in the northern mountains in the higher elevations. I posted a prelim map which shows my thinking for this area. North of this I think there could be 10-15 inches of snow for areas of the interior northeast.
As the storm pulls out later tomorrow, we look to see a good chance for widespread frost/freezes across the area Sunday and Monday morning. I am actually going for a freeze Halloween morning at RDU and temps of 30-35 will be common across the area both mornings, with Monday likely the best day for a widespread frost/freeze.
Temperatures will slowly moderate through the week back to near 70 by late in the week. The overall pattern will favor warmer than normal weather the week of 11/7-11/11.