TONIGHT…Mostly cloudy with a slight chance of rain this evening, then partly cloudy after midnight. Lows in the lower 40s. West winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 20 percent. TUESDAY…Mostly sunny in the morning, then becoming mostly cloudy. Highs in the upper 50s. West winds 15 to 20 mph with gusts up to 30 mph. TUESDAY NIGHT…Mostly cloudy. Lows in the upper 30s. West winds 15 to 20 mph, becoming northwest around 10 mph after midnight.