The weather service says high temperatures in the 70s will replaced by afternoon temperatures topping out around 60s in many areas.
Forecasters have issued a flood watch for 19 counties in north Georgia. They say a slow-moving cold front will bring widespread showers and periods of heavy rain.
The weather service says rainfall amounts of 2 or 3 inches will be common, and some areas could receive as much as 4 inches of rain by Wednesday morning.
The flood watch, in effect through Wednesday morning, covers several north Georgia cities including Calhoun, Cartersville, Chatsworth, Cleveland, Dahlonega, Dalton and Rome.
Copyright 2013 The Associated Press.