National Weather Service Forecast for: Walnut Creek CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 12:28 pm PST Dec 16, 2025
 
Tonight

Tonight: Rain likely, mainly after 4am. Patchy fog before 10pm. Otherwise, cloudy, with a low around 54. Calm wind becoming south southwest around 6 mph after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Rain Likely
and Patchy
Fog
 Wednesday

Wednesday: Rain likely, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 62. South southwest wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Rain Likely
then Slight
Chance Rain
 Wednesday
Night
Wednesday Night: Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 47. Light southwest wind.
Mostly Cloudy
then Patchy
Fog
 Thursday

Thursday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 61. Light and variable wind.
Patchy Fog
then Mostly
Cloudy
 Thursday
Night
Thursday Night: A 30 percent chance of rain after 10pm. Patchy fog. Otherwise, cloudy, with a low around 51. Calm wind.
Chance Rain
and Patchy
Fog
 Friday

Friday: A 40 percent chance of rain. Cloudy, with a high near 61. New precipitation amounts of less than a tenth of an inch possible.
Chance Rain

 Friday
Night
Friday Night: Rain likely. Cloudy, with a low around 55. Chance of precipitation is 70%.
Rain Likely

 Saturday

Saturday: Rain likely. Cloudy, with a high near 60.
Rain Likely

 Saturday
Night
Saturday Night: Rain. Cloudy, with a low around 55.
Rain
Lo 54 °F Hi 62 °F Lo 47 °F Hi 61 °F Lo 51 °F Hi 61 °F Lo 55 °F Hi 60 °F Lo 55 °F

 

Tonight
 
 Rain likely, mainly after 4am. Patchy fog before 10pm. Otherwise, cloudy, with a low around 54. Calm wind becoming south southwest around 6 mph after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
 
 Rain likely, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 62. South southwest wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
 
 Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 47. Light southwest wind.
Thursday
 
 Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 61. Light and variable wind.
Thursday Night
 
 A 30 percent chance of rain after 10pm. Patchy fog. Otherwise, cloudy, with a low around 51. Calm wind.
Friday
 
 A 40 percent chance of rain. Cloudy, with a high near 61. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
 
 Rain likely. Cloudy, with a low around 55. Chance of precipitation is 70%.
Saturday
 
 Rain likely. Cloudy, with a high near 60.
Saturday Night
 
 Rain. Cloudy, with a low around 55.
Sunday
 
 Rain. Cloudy, with a high near 60.
Sunday Night
 
 Rain likely. Cloudy, with a low around 53.
Monday
 
 Rain likely. Cloudy, with a high near 58.
Monday Night
 
 A chance of rain. Cloudy, with a low around 50.
Tuesday
 
 Rain likely. Cloudy, with a high near 58.

 

Forecast from NOAA-NWS for Walnut Creek CA.