This Afternoon...Sunny with isolated showers and thunderstorms. Some thunderstorms May produce heavy rainfall and frequent lightning. Highs in the upper 70s. South winds 5 to 10 mph. Chance of rain 20 percent. Tonight...Mostly cloudy. A chance of showers and thunderstorms in the evening...Then a chance of showers after midnight. Widespread dense fog. Visibility one quarter mile or less at Times. Lows in the lower 60s. Southeast winds 5 to 10 mph. Chance of rain 30 percent. Wednesday...Mostly cloudy. A chance of showers and thunderstorms... Mainly in the afternoon. Widespread dense fog in the morning with visibility one quarter mile or less at Times. Highs in the upper 70s. South winds 5 to 10 mph. Chance of rain 30 percent. Wednesday Night...Mostly cloudy with a chance of showers and thunderstorms. Areas of fog. Lows in the mid 60s. South winds 5 to 10 mph. Chance of rain 40 percent. Thursday...Cloudy. A chance of showers and thunderstorms in the morning...Then showers likely with a chance of thunderstorms in the afternoon. Highs in the lower 70s. South winds 10 to 15 mph. Chance of rain 60 percent. Thursday Night...Cloudy. Showers likely with a chance of thunderstorms in the evening...Then a chance of showers and thunderstorms after midnight. Patchy fog after midnight. Lows in the upper 50s. Chance of rain 60 percent. Friday...Mostly cloudy with a 50 percent chance of showers. Highs in the upper 60s. Friday Night...Partly cloudy. Lows in the mid 40s. Saturday...Sunny. Highs in the upper 60s. Saturday Night...Partly cloudy in the evening...Then becoming mostly clear. Lows in the upper 40s. Sunday...Mostly sunny. Highs in the upper 60s. Sunday Night...Partly cloudy in the evening...Then clearing. Lows in the upper 40s.