National Weather Service Forecast for: Discovery Bay CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 11:26 am PDT May 4, 2026
 
Today

Today: A slight chance of rain between 2pm and 4pm. Mostly cloudy, with a high near 67. West wind 6 to 8 mph. Chance of precipitation is 20%.
Slight Chance
Rain
 Tonight

Tonight: Rain likely, mainly between 2am and 5am. Cloudy, with a low around 54. West wind 3 to 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Rain Likely
 Tuesday

Tuesday: Partly sunny, with a high near 69. Light west southwest wind becoming west 5 to 9 mph in the morning.
Partly Sunny
 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 53. West southwest wind 5 to 8 mph.
Mostly Clear
 Wednesday

Wednesday: Sunny, with a high near 79. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 52.
Mostly Clear
 Thursday

Thursday: Sunny, with a high near 82.
Sunny
 Thursday
Night
Thursday Night: Mostly clear, with a low around 51.
Mostly Clear
 Friday

Friday: Sunny, with a high near 82.
Sunny
Hi 67 °F Lo 54 °F Hi 69 °F Lo 53 °F Hi 79 °F Lo 52 °F Hi 82 °F Lo 51 °F Hi 82 °F

 

Today
 
 A slight chance of rain between 2pm and 4pm. Mostly cloudy, with a high near 67. West wind 6 to 8 mph. Chance of precipitation is 20%.
Tonight
 
 Rain likely, mainly between 2am and 5am. Cloudy, with a low around 54. West wind 3 to 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
 
 Partly sunny, with a high near 69. Light west southwest wind becoming west 5 to 9 mph in the morning.
Tuesday Night
 
 Mostly clear, with a low around 53. West southwest wind 5 to 8 mph.
Wednesday
 
 Sunny, with a high near 79. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Wednesday Night
 
 Mostly clear, with a low around 52.
Thursday
 
 Sunny, with a high near 82.
Thursday Night
 
 Mostly clear, with a low around 51.
Friday
 
 Sunny, with a high near 82.
Friday Night
 
 Clear, with a low around 55.
Saturday
 
 Sunny, with a high near 90.
Saturday Night
 
 Clear, with a low around 58.
Sunday
 
 Sunny, with a high near 95.

 

Forecast from NOAA-NWS for Discovery Bay CA.