National Weather Service Forecast for: Discovery Bay CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 1:24 pm PST Dec 17, 2025
 
Tonight

Tonight: Patchy dense fog after 7pm. Otherwise, increasing clouds, with a low around 48. Light and variable wind.
Patchy Dense
Fog

 Thursday

Thursday: Areas of dense fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 59. Calm wind.
Areas Dense
Fog then
Partly Sunny

 Thursday
Night
Thursday Night: A 10 percent chance of rain after 4am. Areas of fog. Otherwise, increasing clouds, with a low around 48. Calm wind.
Areas Fog
then Slight
Chance Rain
and Patchy
Fog
 Friday

Friday: Rain, mainly after 4pm. High near 58. South wind 5 to 7 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Chance Rain
then Rain

 Friday
Night
Friday Night: Rain. Low around 54. South wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Rain


 Saturday

Saturday: Rain likely. Cloudy, with a high near 57. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain Likely


 Saturday
Night
Saturday Night: Rain. Low around 55. Chance of precipitation is 90%.
Rain


 Sunday

Sunday: Showers and possibly a thunderstorm. Cloudy, with a high near 58.
Showers


 Sunday
Night
Sunday Night: Rain. Cloudy, with a low around 54.
Rain
Lo 48 °F Hi 59 °F Lo 48 °F Hi 58 °F Lo 54 °F Hi 57 °F Lo 55 °F Hi 58 °F Lo 54 °F

 

Tonight
 
 Patchy dense fog after 7pm. Otherwise, increasing clouds, with a low around 48. Light and variable wind.
Thursday
 
 Areas of dense fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 59. Calm wind.
Thursday Night
 
 A 10 percent chance of rain after 4am. Areas of fog. Otherwise, increasing clouds, with a low around 48. Calm wind.
Friday
 
 Rain, mainly after 4pm. High near 58. South wind 5 to 7 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
 
 Rain. Low around 54. South wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
 
 Rain likely. Cloudy, with a high near 57. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
 
 Rain. Low around 55. Chance of precipitation is 90%.
Sunday
 
 Showers and possibly a thunderstorm. Cloudy, with a high near 58.
Sunday Night
 
 Rain. Cloudy, with a low around 54.
Monday
 
 Rain likely. Cloudy, with a high near 56.
Monday Night
 
 Rain likely. Cloudy, with a low around 49.
Tuesday
 
 Rain likely. Cloudy, with a high near 53.
Tuesday Night
 
 Rain. Cloudy, with a low around 50.
Wednesday
 
 Rain likely. Cloudy, with a high near 54.

 

Forecast from NOAA-NWS for Discovery Bay CA.