Currently, upper level low is still situated over the West Virginia and Ohio border and is still dominating our weather as it has for the last few days. Temperatures have remained below normal for much of SE kentucky as cloud cover has kept temps in the 60’s. Today should be similar to yesterday with light northerly winds and temperatures topping out at about 63 with mostly cloudy conditions in the afternoon. Tonight, skies will begin to clear from western to eastern KY as the Upper level low translates east slightly and surface high pressure takes over.
Areas more to the west with the clearest skies and maximized radiational cooling could approach the freezing mark at the surface. Also valley areas where cold air drainage takes place are frost prone tonight. One limiting factor for any frost chances could be light winds tonight, so any areas sheltered from the wind are frost prone.
Bottom line, frost is possible, but it is widely scattered. Only sheltered low lying areas may recieve frost, most areas should stay frost free. If you had extremely tender vegetation one might want to take a precautionary measure of covering it tonight, especially if you lived in rural areas in SW kentucky. Bowling green should hit a low temp of 37 tonight with patchy frost.
Through the rest of the week, temperatures should continue to rise and we should remain dry, as surface ridging takes place.