This Afternoon...Mostly sunny. Highs ranging from the mid 60s along the lake Ontario shore to the upper 70s inland. South winds 5 to 10 mph. Tonight...Mainly clear in the evening...Then becoming partly cloudy with some patchy fog developing overnight. Warm with lows around 60. Light winds. Monday...Some patchy fog in the morning...Otherwise mostly sunny in the morning...Then partly sunny with a chance of showers and thunderstorms in the afternoon mainly south of the thruway. Warm with highs ranging from the mid 60s along the lake Ontario shore to the lower 80s inland. Light winds. Chance of rain 30 percent. Monday Night...Mostly cloudy with a 40 percent chance of showers. Warm with lows in the lower 60s. Light winds. Tuesday...Mostly cloudy. A chance of showers and thunderstorms in the morning...Then showers likely with a chance of thunderstorms in the afternoon. Highs ranging from the mid 60s along the lake Ontario shore to the mid 70s inland. Light winds. Chance of rain 60 percent. Tuesday Night...Showers likely with a chance of thunderstorms. Lows in the upper 50s. Chance of rain 60 percent. Wednesday...Showers likely with a chance of thunderstorms. Highs in the mid 70s. Chance of rain 60 percent. Wednesday Night...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 50s. Chance of rain 50 percent. Thursday...Mostly cloudy with a chance of showers and thunderstorms. Highs in the lower 70s. Chance of rain 50 percent. Thursday Night...Mostly cloudy with a 40 percent chance of showers. Lows around 50. Friday...Partly sunny with a 30 percent chance of showers. Highs in the mid 60s. Friday Night...Partly cloudy. Lows in the mid 40s.