Skip to main content

ALERT: KPBS 89.5FM is undergoing scheduled upgrade work which may result in a temporary signal outage. Click here to listen on our radio stream.

LATEST UPDATES: Tracking COVID-19 | Vaccines | Racial Justice

Marine Layer Expected To Bring Cooler Weather To San Diego County

Clear skies over San Diego Harbor as seen from the Bankers Hill neighborhood ...

Photo by KPBS Staff

Above: Clear skies over San Diego Harbor as seen from the Bankers Hill neighborhood on Feb. 27, 2021.

Strengthening onshore flow over San Diego County Saturday was expected to deepen the marine layer for progressively cooler weather into next week, the National Weather Service said.

Some patchy drizzle could break out Sunday night as a marine layer spreads fog and clouds well up the coastal mountain slopes, forecasters said.

A slow-moving storm system was predicted to increase the chances for rain and mountain snow from late Tuesday through Wednesday and keep daytime temperatures well below normal, the NWS said.

Cool weather and showers may linger through Friday night before dry and slightly warmer weather returns next weekend.

Coastal area high temperatures Saturday were expected to be around 66 degrees with overnight lows of 46-52, the NWS said. Inland valley highs will be 66-71 with overnight lows of 40-48.

Mountain highs were expected to be 61-69 with overnight lows of 33-43. Desert highs will be 82-87 with overnight lows of 48-56.

RELATED: Wildfire Smoke Found To Be Dangerous To Human Health

The large trough was expected to slowly dip southward toward Southern California midway through next week.

"If you think the weekend will be a bit cool, get ready for the middle of the week," forecasters said. "Temperatures are not looking that warm, with highs struggling to reach 60 for many areas west of the mountains and only 30s and 40s for the mountains."

Clouds and showers will start to overspread the region as early as Tuesday afternoon from west to east, the NWS said.

"San Diego County looks to be the hardest hit, with much of the coast and valleys looking to get close to one inch of rain in total," forecasters said. "Snow levels will start out a bit over 4,000 feet on Tuesday and sink to around 3,500 feet early on Wednesday after going back up to 4,000 feet later on Wednesday into Thursday."

Areas near 6,000 feet may see 4 inches of storm total snow or more, with some areas above 8,000 feet seeing 8 inches or more, the NWS said.

At area beaches, an increased west swell will result in elevated surf and a high rip current risk at the beaches Saturday into early Sunday. Surf will mainly range from 3-5 feet, with sets to 6 feet possible in southern San Diego County.


San Diego News Now podcast branding

San Diego news; when you want it, where you want it. Get local stories on politics, education, health, environment, the border and more. New episodes are ready weekday mornings. Hosted by Anica Colbert and produced by KPBS, San Diego and the Imperial County's NPR and PBS station.

  • Need help keeping up with the news that matters most? Get the day's top news — ranging from local to international — straight to your inbox each weekday morning.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Curious San Diego banner

Want more KPBS news?
Find us on Twitter and Facebook, or sign up for our newsletters.

To view PDF documents, Download Acrobat Reader.