The National Weather Service issued a frost advisory Saturday night for the Lexington area, and a freeze warning for Northern Kentucky.
Temperatures overnight Saturday and early Sunday morning were expected to dip to 30 to 35 degrees in Central Kentucky, and possibly as low as 27 in Northern Kentucky.
Virtually all of the state could see some frost, with the possibility of a brief freeze in the northern counties, the weather service said.
In addition, the weather service said light snow could fall in the Eastern Kentucky mountains.
The frost advisory for most of the state and freeze warning for Northern Kentucky were in effect until 9 a.m. Sunday.
Widespread frost and a potential freeze also are forecast for Sunday night.
Temperatures across Kentucky have been well below normal for several days.
Typical highs for mid-October are in the mid- to upper 60s with lows in the mid- to upper 40s.
The weather service said the weather this weekend is more typical of late November.