Tonight: Mainly clear through the early overnight, then becoming partly cloudy with patchy frost developing late. Lows ranging from the upper 30s inland to the mid 40s along the lake Ontario shore. Northeast winds 10 mph or less.

Day: Mostly sunny. Highs in the lower 70s. East winds 10 mph or less.

Night: Partly cloudy and warmer with lows around 50. Light winds.

Day: Sunny, warm with highs ranging from the mid 70s along the lake Ontario shore to the upper 70s inland. Light winds.

Night: Mainly clear. Lows ranging from the lower 50s inland to the mid 50s along the lake Ontario shore. Light winds.

Day: Mostly sunny. Highs in the lower 80s.

Night: Mainly clear. Lows in the upper 50s. Highs in the lower 80s.

Day: Mainly clear. Lows in the upper 50s. Highs in the lower 80s.

Day: Mainly clear. Lows in the upper 50s. Highs in the lower 80s.

Day: Mainly clear. Lows in the upper 50s. Highs in the lower 80s.

Night: Partly cloudy. Lows in the upper 50s.

Day: Partly sunny with a 30 percent chance of showers. Highs in the upper 70s.

Night: Mostly cloudy. A 50 percent chance of showers. Lows in the lower 50s. Highs in the mid 60s.