Gray is not going away anytime soon

The thickest batch of May gray so far this year is not likely to go away all day Thursday, at least at the coast and perhaps inland, too. Friday and Saturday don’t look much different.

“As we head into this afternoon, I think the clouds will hang in there,” National Weather Service forecaster Matthew Moreland said. “And there’s not really going to be much change over the next couple of days.”

Heavy drizzle and light rain slickened roads around much of San Diego County Thursday morning. The wettest spots were mostly in North County, with Vista recording 0.06 of an inch. Oceanside and Lake Wohlford near Escondido each had 0.04.

Many locations had 0.02 or 0.01 of an inch, but some did not record measurable rain. San Diego International Airport, site of the city’s official weather station, had a trace.

A low-pressure system off the coast of Central California has helped beef up the marine layer, which was more than 5,300 feet thick Thursday morning. That low is expected to move inland Thursdy night and Friday, and that will keep the skies gray through Saturday. Drizzle is possible again Thursday night, Friday morning and evening and again Saturday morning.

The low should be far enough east by Sunday to allow a bit more sunshine, but no significant warming is expected, especially at the coast.

“There will be a continuation of the overnight and marine low clouds,” Moreland said. “The overall pattern is locked in.”

San Diego is not expected to top 70 degrees for the next week. The inland valleys should stay on the cool side for the next few days, with highs in the low 70s until Sunday. But temperatures climb to about normal early next week, with highs in upper 70s to low 80s.

The mountains should see a similar trend. It will be chilly on Friday and Saturday, with highs not expected to climb out of the 50s. Then temperatures rise to the high 70s early next week. The desert should stay under 100 degrees until next Tuesday.

Elevated surf is expected along the coast Thursday, with 3- to 6-foot waves expected south of Carlsbad and 7-foot waves possible to the north. Strong rips currents could create dangerous swimming conditions.

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