National Weather Service Forecast for: Yountville CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 12:46 am PDT Aug 20, 2026
 
Overnight

Overnight: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 54. Calm wind.
Patchy Fog

 Thursday

Thursday: Partly sunny, with a high near 85. Calm wind becoming south southeast around 5 mph.
Partly Sunny

 Thursday
Night
Thursday Night: Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 54. Calm wind.
Mostly Cloudy
then Patchy
Fog
 Friday

Friday: Partly sunny, with a high near 84. Calm wind becoming south southwest around 6 mph in the afternoon.
Partly Sunny

 Friday
Night
Friday Night: Patchy fog after midnight. Otherwise, partly cloudy, with a low around 52. Light west southwest wind.
Mostly Clear
then Patchy
Fog
 Saturday

Saturday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 85.
Patchy Fog
then Sunny
 Saturday
Night
Saturday Night: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 53.
Mostly Clear
then Patchy
Fog
 Sunday

Sunday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 86.
Patchy Fog
then Sunny
 Sunday
Night
Sunday Night: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 53.
Partly Cloudy
then Patchy
Fog
Lo 54 °F Hi 85 °F Lo 54 °F Hi 84 °F Lo 52 °F Hi 85 °F Lo 53 °F Hi 86 °F Lo 53 °F

 

Overnight
 
 Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 54. Calm wind.
Thursday
 
 Partly sunny, with a high near 85. Calm wind becoming south southeast around 5 mph.
Thursday Night
 
 Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 54. Calm wind.
Friday
 
 Partly sunny, with a high near 84. Calm wind becoming south southwest around 6 mph in the afternoon.
Friday Night
 
 Patchy fog after midnight. Otherwise, partly cloudy, with a low around 52. Light west southwest wind.
Saturday
 
 Patchy fog before 8am. Otherwise, mostly sunny, with a high near 85.
Saturday Night
 
 Patchy fog after 2am. Otherwise, partly cloudy, with a low around 53.
Sunday
 
 Patchy fog before 8am. Otherwise, mostly sunny, with a high near 86.
Sunday Night
 
 Patchy fog after 1am. Otherwise, partly cloudy, with a low around 53.
Monday
 
 Patchy fog before 8am. Otherwise, partly sunny, with a high near 83.
Monday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 52.
Tuesday
 
 Patchy fog. Otherwise, partly sunny, with a high near 84.
Tuesday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 53.
Wednesday
 
 Patchy fog. Otherwise, partly sunny, with a high near 86.

 

Forecast from NOAA-NWS for Yountville CA.