National Weather Service Forecast for: Walnut Creek CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 9:46 am PDT May 4, 2026
 
Today

Today: A slight chance of rain between 3pm and 5pm. Partly sunny, with a high near 67. West southwest wind 5 to 9 mph. Chance of precipitation is 20%.
Partly Sunny
then Slight
Chance Rain
 Tonight

Tonight: Rain likely, mainly between 8pm and 4am. Mostly cloudy, with a low around 51. Southwest wind 5 to 8 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Chance Rain
then Rain
Likely
 Tuesday

Tuesday: A 10 percent chance of rain before 7am. Mostly cloudy, with a high near 67. West southwest wind 5 to 8 mph.
Slight Chance
Rain then
Partly Sunny
 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 51. West southwest wind 6 to 8 mph.
Partly Cloudy

 Wednesday

Wednesday: Mostly sunny, with a high near 74. Calm wind becoming west 5 to 7 mph in the afternoon.
Mostly Sunny

 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 51.
Partly Cloudy

 Thursday

Thursday: Mostly sunny, with a high near 75.
Mostly Sunny

 Thursday
Night
Thursday Night: Partly cloudy, with a low around 50.
Partly Cloudy

 Friday

Friday: Sunny, with a high near 77.
Sunny
Hi 67 °F Lo 51 °F Hi 67 °F Lo 51 °F Hi 74 °F Lo 51 °F Hi 75 °F Lo 50 °F Hi 77 °F

 

Today
 
 A slight chance of rain between 3pm and 5pm. Partly sunny, with a high near 67. West southwest wind 5 to 9 mph. Chance of precipitation is 20%.
Tonight
 
 Rain likely, mainly between 8pm and 4am. Mostly cloudy, with a low around 51. Southwest wind 5 to 8 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
 
 A 10 percent chance of rain before 7am. Mostly cloudy, with a high near 67. West southwest wind 5 to 8 mph.
Tuesday Night
 
 Partly cloudy, with a low around 51. West southwest wind 6 to 8 mph.
Wednesday
 
 Mostly sunny, with a high near 74. Calm wind becoming west 5 to 7 mph in the afternoon.
Wednesday Night
 
 Partly cloudy, with a low around 51.
Thursday
 
 Mostly sunny, with a high near 75.
Thursday Night
 
 Partly cloudy, with a low around 50.
Friday
 
 Sunny, with a high near 77.
Friday Night
 
 Clear, with a low around 51.
Saturday
 
 Sunny, with a high near 85.
Saturday Night
 
 Clear, with a low around 54.
Sunday
 
 Sunny, with a high near 91.

 

Forecast from NOAA-NWS for Walnut Creek CA.