Tonight...Partly cloudy early...Then becoming mostly cloudy. Lows in the mid 50s. Northeast winds 5 to 10 mph...Becoming light. Sunday...Partly sunny. Highs ranging from the upper 60s along the lake Ontario shore to the upper 70s inland. South winds 10 mph or less...Increasing to 10 to 15 mph. Sunday Night...Partly to mostly cloudy. Warm with lows in the lower 60s. South winds 5 to 10 mph...Becoming light. Monday...Partly sunny. A chance of showers in the afternoon. Warm with highs ranging from around 70 along the lake Ontario shore to the lower 80s inland. Light winds. Chance of rain 30 percent. Monday Night...Mostly cloudy. A chance of showers. Warm with lows in the lower 60s. Light winds. Chance of rain 40 percent. Tuesday...Showers likely with a chance of thunderstorms. Highs in the mid 70s. Lows in the upper 50s. Chance of rain 60 percent. Wednesday...Showers likely with a chance of thunderstorms. Highs in the mid 70s. Lows in the upper 50s. Chance of rain 60 percent. Wednesday Night...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 50s. Highs in the lower 70s. Chance of rain 50 percent. Thursday...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 50s. Highs in the lower 70s. Chance of rain 50 percent. Thursday Night...Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 50s. Chance of rain 50 percent. Friday...Partly sunny with a 30 percent chance of showers. Highs in the lower 60s. Friday Night...Mostly cloudy. Lows in the mid 40s.