San Diego weather

San Diego Weather: A Cool, Rainy Fall Friday

NBC 7's First Alert Forecast is tracking light to moderate rain across San Diego County Friday morning

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It’s been a cool start to October in San Diego County and the pattern continued Thursday and Friday with cloudy skies and rain. Here’s what you can expect from our weather Friday and heading into your weekend.

Clouds moved in overnight, giving way to light to moderate rain across San Diego County. The National Weather Service in San Diego said the most widespread showers would blanket the region between 5 a.m. and 10 a.m. Friday.

NBC 7 meteorologist Sheena Parveen said the rain would linger for the first half of the day, along with cooler temperatures: Upper 60s at the coast, around 70 inland, and a chilly 50 in San Diego County’s mountains.

"It will stay cool through the day with the persistent onshore flow," she explained.

Friday will be the coolest day of the week (it's always cool when it's Friday, right?).

After the widespread rain Friday morning, Parveen said a few scattered showers would remain in certain parts of the county but by lunchtime, most of the rain was expected to taper off.

Light rain moved in overnight and showers are becoming more widespread on this rainy fall Friday morning in San Diego County. NBC 7's Brooke Martell said the commute will be wet, so be extra cautious while driving.

When everything is said and done Friday, Parveen said this weather system could bring between 0.20 and a half-inch of rain to San Diego County.

The National Weather Service in San Diego said local amounts over 1 inch possible in the mountains.

“Still a decent amount of rainfall for the month of October, and we certainly still could use the rain,” Parveen added.

Friday's Storm: Rainfall Totals

So, how much rain did the NWS track overnight and into Friday morning? The agency laid out the 12-hour rainfall totals here, but here are the highlights, as of 8 a.m. Friday.

The areas with the most rainfall, so far are:

  • Oceanside: 0.90 inches
  • Bonsall: 0.72 inches
  • Rainbow: 0.69 inches
  • Fallbrook: 0.64 inches
  • Vista: 0.54 inches
  • Carlsbad: 0.41 inches
  • Encinitas: 0.33 inches
  • Rancho Bernardo: 0.29 inches
  • Escondido: 0.27 inches
  • Lemon Grove: 0.21 inches
  • La Mesa: 0.20 inches
  • Del Mar: 0.18 inches
  • Fashion Valley: 0.18 inches
  • Kearny Mesa: 0.17 inches
  • Poway: 0.16 inches
  • Granite Hills: 0.16 inches
  • San Diego International Airport: 0.15 inches
  • Ramona: 0.15 inches
  • Santee: 0.13 inches
  • El Cajon: 0.12 inches

Parveen said this weather system would not be as hard-hitting as the thunderstorms and lightning San Diego County experienced earlier this week.

NBC 7's Melissa Adan looks back on Monday night's crazy lightning

What About the Weekend? Is There More Rain?

By Friday afternoon, the county will be dry, and it’ll stay that way through the weekend, according to NBC 7's First Alert Forecast.

Parveen said Saturday will be cool with high temps around 70 degrees at the coast and 72 degrees inland. On Sunday, it’ll warm up to the upper 70s at the coast and mid-80s inland.

"Into the weekend, expect sunny skies and dry conditions. Saturday will remain cool while Sunday temperatures will spike as an offshore flow kicks in briefly," she added.

By Monday, though, another cooldown is on the horizon.

Parveen said temps will be mild Monday and by Tuesday, even cooler and a little breezy, too.

So, that fall sweater is really going to shine.

For the latest weather updates in San Diego County, follow NBC 7's First Alert Forecast here.

Brian James' Evening Forecast for Oct. 7, 2021
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