Weekend May Be Wet, With Temperature on the Cool Side

Orange County and the rest of Southern California face a cool, cloudy weekend, with the possibility of light rain by Sunday, according to the National Weather Service.

The forecasters concluded gloomily on Thursday that a weak front will be moving through the Southland early today, bringing a deep marine layer and some local drizzle along the coast.

Fog and drizzle will probably spread to the coastal mountain slopes by tonight. Another cold front is expected to arrive in Southern California late Saturday, with a 30% chance of showers through Sunday.

That situation should end on Monday, however, said both the National Weather Service and the private, San Francisco-based Earth Environment Service. Tuesday should be sunny and warmer.

In Orange County on Thursday, the weather already was on the cool side, with a low overnight temperature of 49 in San Juan Capistrano and a high temperature during the day that only reached 63 degrees in that city. It was little warmer elsewhere in the county: Santa Ana had a low of 55 and a high of 68, and Newport Beach had a low of 55 and a high of 65.

Orange County cities are expected to have about the same range of temperatures today, but with prospects of the weather becoming slightly cooler by Sunday.

The Los Angeles Civic Center, which had a high temperature of 68 degrees on Thursday, is expected to be in the mid-60s today and perhaps a degree or two cooler on Saturday. Thursday’s low temperature at the Los Angeles Civic Center was 56.

The new cold front will mean cooler readings in the mountains and deserts also, the weather service said. Southern California mountain high temperatures will probably be in the upper 40s to mid-50s today, dropping a few degrees on Saturday. West to southwest winds may blow up to 25 m.p.h. at times.

The upper deserts should have highs in the mid-60s to low 70s today, dropping a little on Saturday. The lower deserts will be in the 70s and 80s today, and in the 70s on Saturday.

Light rain was falling in the San Francisco Bay Area Thursday afternoon and there were some heavy thunderstorms in Central California.