Lauderdale County is under a winter weather advisory that anticipates freezing rain, sleet and snow for Friday.
Very light snow, sleet and ice accumulations are anticipated, according to the advisory from the National Weather Service office in Huntsville.
The weather service issued the advisory for counties north of the Tennessee River, but Colbert and Franklin counties could receive some snow or sleet, officials said.
Graphics from the weather service indicate snow and sleet accumulations of a half inch or less are possible in Lauderdale County, with even lighter totals in Colbert and Franklin counties.
Ice accumulations are expected to be less than one-tenth of an inch in Lauderdale County and possibly extend into northern portions of Colbert County, the graphics indicate.
The advisory starts at 8 a.m. Friday and continues until midnight.
The timing for the onset of wintry precipitation is 7-10 a.m. in the Shoals, with the western portions of northwest Alabama receiving it first, according to the weather service. It should end between 4-7 p.m.
The cold front that is bringing this wintry mixture will drop temperatures dramatically. The forecast calls for a balmy 66-degree high today, with a 40 percent chance of showers. Rainfall chances grow to 90 percent tonight, with a low near 39.
Temperatures will fall throughout Friday, bottoming out at 22 degrees by early Saturday morning, according to the forecast.
Breezy conditions will cause wind chills between 17 and 27 degrees Friday and 11 and 16 Friday night.
If any freezing precipitation accumulates, it would stay through the weekend because highs will reach 30 Saturday and 32 Sunday. Saturday night's low will be near 16, with Sunday's low near 21.
The high Monday will be near 42, but the forecast calls for a 30 percent chance of rain, turning to snow, Monday night with a low near 16. The cold continues Tuesday with a high near 29 and low near 12.