National Weather Service Forecast for: Napa CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 1:26 pm PDT Jun 19, 2026
 
Tonight

Tonight: Partly cloudy, with a low around 52. West southwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 20 mph.
Partly Cloudy

 Saturday

Saturday: Partly sunny, then gradually becoming sunny, with a high near 75. Calm wind becoming southwest 5 to 9 mph in the morning.
Becoming
Sunny
 Saturday
Night
Saturday Night: Patchy fog after 2am. Otherwise, increasing clouds, with a low around 51. West southwest wind 5 to 9 mph becoming calm in the evening.
Mostly Clear
then Patchy
Fog
 Sunday

Sunday: Patchy fog before 8am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 80. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Patchy Fog
then Sunny
 Sunday
Night
Sunday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 52. Southwest wind 5 to 8 mph becoming calm after midnight.
Clear then
Patchy Fog
 Monday

Monday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 81.
Patchy Fog
then Sunny
 Monday
Night
Monday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 53.
Clear then
Patchy Fog
 Tuesday

Tuesday: Patchy fog before 8am. Otherwise, sunny, with a high near 82.
Patchy Fog
then Sunny
 Tuesday
Night
Tuesday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 53.
Clear then
Patchy Fog
Lo 52 °F Hi 75 °F Lo 51 °F Hi 80 °F Lo 52 °F Hi 81 °F Lo 53 °F Hi 82 °F Lo 53 °F

 

Tonight
 
 Partly cloudy, with a low around 52. West southwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 20 mph.
Saturday
 
 Partly sunny, then gradually becoming sunny, with a high near 75. Calm wind becoming southwest 5 to 9 mph in the morning.
Saturday Night
 
 Patchy fog after 2am. Otherwise, increasing clouds, with a low around 51. West southwest wind 5 to 9 mph becoming calm in the evening.
Sunday
 
 Patchy fog before 8am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 80. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Sunday Night
 
 Patchy fog after 5am. Otherwise, mostly clear, with a low around 52. Southwest wind 5 to 8 mph becoming calm after midnight.
Monday
 
 Patchy fog before 8am. Otherwise, mostly sunny, with a high near 81.
Monday Night
 
 Patchy fog after 5am. Otherwise, mostly clear, with a low around 53.
Tuesday
 
 Patchy fog before 8am. Otherwise, sunny, with a high near 82.
Tuesday Night
 
 Patchy fog after 5am. Otherwise, mostly clear, with a low around 53.
Wednesday
 
 Patchy fog before 8am. Otherwise, sunny, with a high near 84.
Wednesday Night
 
 Patchy fog. Otherwise, mostly clear, with a low around 54.
Thursday
 
 Patchy fog. Otherwise, sunny, with a high near 83.
Thursday Night
 
 Patchy fog. Otherwise, mostly clear, with a low around 53.
Friday
 
 Sunny, with a high near 83.

 

Forecast from NOAA-NWS for Napa CA.