Overnight...Partly cloudy and warm with lows ranging from the lower 60s inland to the lower 50s along the lake Ontario shore. Southwest winds 10 mph or less. Monday...Mostly sunny. Highs ranging from the mid 60s along the lake Ontario shore to the lower 80s inland. Light winds. Monday Night...Partly cloudy in the evening...Then mostly cloudy with a chance of showers and thunderstorms overnight. Warm with lows around 60. Light winds. Chance of rain 40 percent. Tuesday...Partly sunny with a chance of showers and thunderstorms in the morning...Then mostly cloudy with showers likely with a chance of thunderstorms in the afternoon. Highs ranging from the lower 70s along the lake Ontario shore to the lower 80s inland. Light winds. Chance of rain 60 percent. Tuesday Night...Showers likely with a chance of thunderstorms. Warm with lows in the lower 60s. Light winds. Chance of rain 60 percent. Wednesday...Showers likely with a chance of thunderstorms. Highs around 80. Chance of rain 70 percent. Wednesday Night...Showers likely with a chance of thunderstorms. Lows around 60. Chance of rain 70 percent. Thursday...Showers likely with a chance of thunderstorms. Highs in the upper 60s. Chance of rain 70 percent. Thursday Night...Mostly cloudy with a 40 percent chance of showers. Lows in the mid 40s. Friday...Mostly sunny. Highs around 60. Friday Night...Mainly clear. Lows in the mid 40s. Saturday...Sunny. Highs around 60. Saturday Night...Partly cloudy. Lows in the mid 40s.