mercer county ky area forecast 942 pm edt thu sep 4 2008 .overnight...partly cloudy. scattered showers and isolated thunderstorms possible late. lows in the upper 60s. south winds 10 to 15 mph. chance of rain 30 percent. .friday...mostly cloudy with a 50 percent chance of showers and thunderstorms. highs in the lower 80s. southwest winds 5 to 15 mph decreasing to up to 5 mph in the afternoon. .friday night...mostly cloudy with scattered showers and thunderstorms. lows in the lower 60s. north winds up to 5 mph. chance of rain 40 percent. .saturday...partly sunny with scattered showers and thunderstorms. highs in the lower 80s. northwest winds 5 to 15 mph. chance of rain 30 percent. .saturday night...partly cloudy. lows in the lower 60s. northwest winds up to 10 mph. .sunday through monday...partly cloudy. highs in the upper 80s. lows in the lower 60s. .monday night...mostly cloudy with a 30 percent chance of showers and thunderstorms. lows in the lower 60s. .tuesday...partly sunny. a 30 percent chance of showers and thunderstorms until midday. highs in the lower 80s. .tuesday night through thursday...partly cloudy. lows in the upper 50s. highs in the lower 80s.