Rain Arrives In Lamorinda, Brings Chance Of Thunderstorms

LAMORINDA, CA — Following sunny skies earlier Friday in Lamorinda, the rain was falling by late afternoon, with a 90 percent chance rainy conditions would continue in Lamorinda overnight and much of Saturday.

Forecasters with the National Weather Service for the greater San Francisco Bay Area said a cold frontal zone associated with a low-pressure system would sweep through the region from northwest to southeast on Friday with a band of showers accompanying it.

Rain chances were expected to increase first across the North Bay, then across San Francisco before reaching the Central Coast.

Breezy winds were expected to precede the frontal passage with low elevation gusts reaching up to 30 mph and gusts topping out around 45 mph.

According to the NWS, overall impacts from the wind and rain should be minor, except for some localized flooding on roadways or fallen trees. Scattered showers were likely to return overnight.

There was also a slight chance of isolated thunderstorms with lightning and brief heavy rainfall as the primary hazards. Overnight rain amounts should be light but heavier showers or thunderstorms were also possible.

Forecasters projected drier conditions would return by early next week, with rain chances returning mid to late week.

Lamorinda 7-Day Forecast

Friday Afternoon
Showers and possibly a thunderstorm. Steady temperature around 58. Southwest wind around 18 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night
Rain and possibly a thunderstorm. Low around 46. West southwest wind 7 to 14 mph becoming south after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Saturday
Rain before 8am, then showers and possibly a thunderstorm after 8am. High near 56. Southwest wind 9 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Saturday Night
Showers and possibly a thunderstorm before 11pm, then rain after 11pm. Low around 46. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Sunday
A 30 percent chance of rain before 11am. Partly sunny, with a high near 59. Northwest wind 10 to 13 mph, with gusts as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.

Sunday Night
Mostly clear, with a low around 44.

Monday
Partly sunny, with a high near 58.

Monday Night
A slight chance of rain before 11pm. Mostly cloudy, with a low around 45.

Tuesday
Mostly sunny, with a high near 62.

Tuesday Night
Partly cloudy, with a low around 45.

Wednesday
A chance of rain. Partly sunny, with a high near 60.

Wednesday Night
Rain likely. Mostly cloudy, with a low around 45.

Thursday
A chance of rain. Partly sunny, with a high near 58.

Thursday Night
A chance of rain. Mostly cloudy, with a low around 45.

Friday
Rain likely. Partly sunny, with a high near 55.

Bay City News Service contributed to this report.