National Weather Service Forecast for: Discovery Bay CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 11:44 pm PST Feb 1, 2026
 
Overnight

Overnight: Mostly clear, with a low around 44. West wind around 6 mph.
Mostly Clear

 Monday

Monday: Sunny, with a high near 65. North northwest wind 5 to 7 mph.
Sunny

 Monday
Night
Monday Night: Partly cloudy, with a low around 40. Calm wind.
Partly Cloudy

 Tuesday

Tuesday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 64. North northwest wind 3 to 5 mph.
Patchy Fog
then Sunny
 Tuesday
Night
Tuesday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 41. Calm wind.
Mostly Clear
then Patchy
Fog
 Wednesday

Wednesday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 64.
Patchy Fog
then Sunny
 Wednesday
Night
Wednesday Night: Patchy fog after 4am. Otherwise, partly cloudy, with a low around 42.
Mostly Clear
then Patchy
Fog
 Thursday

Thursday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 64.
Patchy Fog
then Mostly
Sunny
 Thursday
Night
Thursday Night: Mostly cloudy, with a low around 45.
Mostly Cloudy
Lo 44 °F Hi 65 °F Lo 40 °F Hi 64 °F Lo 41 °F Hi 64 °F Lo 42 °F Hi 64 °F Lo 45 °F

 

Overnight
 
 Mostly clear, with a low around 44. West wind around 6 mph.
Monday
 
 Sunny, with a high near 65. North northwest wind 5 to 7 mph.
Monday Night
 
 Partly cloudy, with a low around 40. Calm wind.
Tuesday
 
 Patchy fog before 9am. Otherwise, mostly sunny, with a high near 64. North northwest wind 3 to 5 mph.
Tuesday Night
 
 Patchy fog after 5am. Otherwise, mostly clear, with a low around 41. Calm wind.
Wednesday
 
 Patchy fog before 8am. Otherwise, mostly sunny, with a high near 64.
Wednesday Night
 
 Patchy fog after 4am. Otherwise, partly cloudy, with a low around 42.
Thursday
 
 Patchy fog before 9am. Otherwise, partly sunny, with a high near 64.
Thursday Night
 
 Mostly cloudy, with a low around 45.
Friday
 
 Partly sunny, with a high near 65.
Friday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 45.
Saturday
 
 Patchy fog. Otherwise, mostly sunny, with a high near 65.
Saturday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 46.
Sunday
 
 A slight chance of rain. Patchy fog. Otherwise, partly sunny, with a high near 65.

 

Forecast from NOAA-NWS for Discovery Bay CA.