Rain Arrives In Walnut Creek, Brings Chance Of Thunderstorms

WALNUT CREEK, CA — Following sunny skies earlier Friday, the rain was falling in Walnut Creek by late afternoon, with a 90 percent chance rainy conditions would continue in Walnut Creek 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.

Walnut Creek 7-Day Forecast

Friday Afternoon
Showers and possibly a thunderstorm. Steady temperature around 62. Southwest wind around 16 mph, with gusts as high as 26 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
Showers and possibly a thunderstorm before 8pm, then rain, mainly between 8pm and 11pm. Low around 46. West southwest wind 6 to 13 mph becoming south southeast after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Saturday
Rain likely, then showers and possibly a thunderstorm after 11am. High near 59. Southwest wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday Night
Showers and possibly a thunderstorm before 11pm, then rain likely after 11pm. Low around 46. Southwest wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday
A 30 percent chance of rain before 11am. Partly sunny, with a high near 63. West southwest wind 7 to 11 mph becoming northwest in the afternoon. 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 62.

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

Tuesday
Mostly sunny, with a high near 65.

Tuesday Night
Partly cloudy, with a low around 46.

Wednesday
A chance of rain. Partly sunny, with a high near 64.

Wednesday Night
Rain likely. Mostly cloudy, with a low around 46.

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

Thursday Night
A chance of rain. Mostly cloudy, with a low around 46.

Friday
Rain likely. Partly sunny, with a high near 59.

Bay City News Service contributed to this report.