We do not have a frost advisory, but some north Georgia residents still might see some patchy areas of frost by morning. The Frost Advisories are in effect in North Carolina, Tennessee, and northeast Alabama. Those are the areas that have the better chance of seeing some widespread frost develop.
Even though we don't have a frost advisory, the local NWS Weather office issued a "Special Weather Statement" alerting north Georgia residents that some patchy frost may develop. It doesn't look like it would be widespread, only patches of frost in some isolated areas.
It takes temperatures in the 33-37 degree range to even have a good possibility of frost. It also requires calm wind and clear skies to allow for that radiational cooling. That recipe will not be present for most of our viewing area.
Here's a look at the special weather statement from the NWS:
1013 PM EDT SUN OCT 20 2013
...ISOLATED PATCHY FROST POSSIBLE IN PORTIONS OF NORTH GEORGIA
FROM 4 AM EDT TO 9 AM EDT MONDAY...
THE COMBINATION OF UNSEASONABLY COOL TEMPERATURES UNDER MOSTLY CLEAR
SKIES AND CALM WINDS WILL ALLOW FOR POSSIBLE PATCHY FROST
DEVELOPMENT IN SOME ISOLATED AREAS MONDAY MORNING. THE LOCATIONS
WITH THE BEST CHANCE OF ANY FROST DEVELOPMENT WILL BE IN THE
VALLEYS OF NORTH GEORGIA AND ANY ELEVATED SURFACES. ALTHOUGH THIS
THREAT IS NOT EXPECTED TO BE WIDESPREAD...THOSE WITH SENSITIVE
OUTDOOR PLANTS IN TYPICAL COOL SPOTS SHOULD CONSIDER TAKING
PRECAUTIONS TO PROTECT VEGETATION.