Tonight: Mainly clear through the early overnight, then becoming partly cloudy. Lows ranging from the upper 30s inland to the mid 40s along the lake Ontario shore. Light winds, becoming north 5 to 10 mph.

Day: Sunny. Highs in the mid 50s. North winds 5 to 10 mph, becoming northwest 10 to 15 mph.

Night: Mainly clear with patchy frost developing overnight. Lows ranging from the mid 30s inland to the lower 40s along the lake Ontario shore. Northwest winds 5 to 10 mph, becoming light.

Day: Mostly sunny. Highs in the upper 50s. Light winds.

Night: Mostly cloudy. Highs in the mid 60s. Lows in the lower 50s.

Day: Mostly cloudy. Highs in the mid 60s. Lows in the lower 50s.

Day: Showers likely. Highs in the lower 70s. Chance of rain 60 percent.

Night: Showers likely. Highs in the lower 60s. Lows in the mid 40s. Chance of rain 70 percent.

Day: Showers likely. Highs in the lower 60s. Lows in the mid 40s. Chance of rain 70 percent.

Day: Mostly cloudy with a 50 percent chance of showers. Highs around 60. Lows in the mid 40s.

Day: Mostly cloudy with a 50 percent chance of showers. Highs around 60. Lows in the mid 40s.