jefferson county ky area forecast 131 am edt wed jun 19 2013 .overnight...partly cloudy. patchy fog. lows in the mid 60s. northeast winds up to 5 mph. .wednesday...mostly sunny. highs in the lower 80s. northeast winds up to 5 mph. .wednesday night...mostly clear. lows in the mid 60s. northeast winds up to 5 mph. .thursday...mostly sunny. highs in the mid 80s. southeast winds up to 5 mph. .thursday night...mostly clear. lows in the mid 60s. east winds up to 5 mph. .friday through sunday night...partly cloudy. highs around 90. lows in the lower 70s. .monday...partly cloudy with a 20 percent chance of thunderstorms. highs in the lower 90s. .monday night...partly cloudy. lows in the lower 70s. .tuesday...partly cloudy with a 30 percent chance of thunderstorms. highs in the lower 90s.