TONIGHT…Cloudy. A chance of rain showers and thunderstorms this evening. Some thunderstorms may produce heavy rainfall this evening. Much cooler with lows around 30. West winds 15 to 20 mph. Chance of rain 50 percent. FRIDAY…Mostly cloudy. Much cooler with highs in the upper 30s. Northwest winds 10 to 15 mph with gusts up to 25 mph. FRIDAY NIGHT…Partly cloudy in the evening, then clearing. Lows in the lower 20s. Northwest winds 5 to 10 mph, becoming west after midnight.