The National Weather Service offered this warning for Middle Tenneessee:
After high temperatures on Friday in the upper 70s and lower 80s a strong cold front will push through the region late Friday night bringing with it a round of rain showers and cooler temperatures.
A reinforcing upper level disturbance will bring another round of rain showers Saturday night into Sunday along with even cooler temperatures.
Highs Saturday should only top out in the lower 60s with locations struggling to reach 60 degrees on Sunday.
Behind the cold front and upper level disturbance, canadian high pressure will settle into the Ohio and Tennessee valleys Sunday night, thus clear skies and calming winds will allow temperatures to drop into the middle to upper 30s Sunday night into Monday morning allowing for areas of frost to form in some locations with other locations possibly experiencing patchy frost.
Continued unseasonably cooler temperatures but slightly warmer overnight lows are expected Tuesday morning.
Persons with agricultural interests should continue to monitor this potential frost situation.