TONIGHT…Mostly cloudy. Showers and thunderstorms, mainly this evening. Locally heavy rainfall possible this evening. Lows in the upper 50s. West winds 10 to 15 mph, becoming northwest after midnight. Chance of rain 90 percent. MONDAY…Mostly cloudy in the morning, then becoming mostly sunny. Highs in the lower 70s. Northwest winds around 10 mph. MONDAY NIGHT…Mostly clear. Lows in the lower 50s. West winds 5 to 10 mph, becoming southwest after midnight.