Today...Widespread dense fog with visibility near one quarter mile or less at Times in the morning. Partly cloudy. Highs in the upper 60s. North winds 5 mph. Tonight...Partly cloudy. Lows in the mid 40s. Northeast winds 5 to 10 mph. Friday...Mostly cloudy with chance of showers and isolated thunderstorms. Highs in the lower 60s. East winds 5 to 10 mph. Chance of precipitation 20 percent. Friday Night...Showers likely and isolated thunderstorms. Cloudy. Lows in the mid 40s. Northeast winds 10 to 15 mph. Chance of precipitation 60 percent. Saturday...Mostly cloudy with chance of light rain in the morning...Then partly cloudy with slight chance of light rain in the afternoon. Highs in the mid 50s. North winds 10 to 15 mph. Chance of rain 50 percent. Saturday Night...Partly cloudy. Lows in the mid 30s. Sunday...Mostly sunny. Highs around 60. Sunday Night...Mostly clear. Lows in the mid 30s. Washingtons Birthday...Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs in the lower 60s. Monday Night...Partly cloudy with a 30 percent chance of showers and thunderstorms. Lows in the upper 40s. Tuesday...Becoming mostly cloudy. A 30 percent chance of showers and thunderstorms. Highs in the upper 60s. Tuesday Night...Mostly cloudy with a 20 percent chance of showers. Lows in the lower 50s.