National Weather Service Forecast for: Campbell CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 1:40 am PST Dec 5, 2025
 
Overnight

Overnight: Patchy fog after 3am. Patchy frost between 4am and 5am. Otherwise, mostly clear, with a low around 38. Calm wind.
Patchy Frost
and Patchy
Fog
 Friday

Friday: Sunny, with a high near 64. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Sunny

 Friday
Night
Friday Night: Patchy fog after 4am. Otherwise, increasing clouds, with a low around 43. Light and variable wind.
Mostly Clear
then Patchy
Fog
 Saturday

Saturday: Patchy fog between 8am and 9am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 65. Calm wind becoming northwest 5 to 8 mph in the morning.
Patchy Fog
then Sunny
 Saturday
Night
Saturday Night: Mostly clear, with a low around 44. Calm wind becoming west northwest around 5 mph in the evening.
Mostly Clear

 Sunday

Sunday: Mostly sunny, with a high near 67.
Mostly Sunny

 Sunday
Night
Sunday Night: Partly cloudy, with a low around 45.
Partly Cloudy

 Monday

Monday: Patchy fog between 7am and 8am. Otherwise, sunny, with a high near 67.
Patchy Fog
then Sunny
 Monday
Night
Monday Night: Mostly clear, with a low around 46.
Mostly Clear
Lo 38 °F Hi 64 °F Lo 43 °F Hi 65 °F Lo 44 °F Hi 67 °F Lo 45 °F Hi 67 °F Lo 46 °F

 

Overnight
 
 Patchy fog after 3am. Patchy frost between 4am and 5am. Otherwise, mostly clear, with a low around 38. Calm wind.
Friday
 
 Sunny, with a high near 64. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Friday Night
 
 Patchy fog after 4am. Otherwise, increasing clouds, with a low around 43. Light and variable wind.
Saturday
 
 Patchy fog between 8am and 9am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 65. Calm wind becoming northwest 5 to 8 mph in the morning.
Saturday Night
 
 Mostly clear, with a low around 44. Calm wind becoming west northwest around 5 mph in the evening.
Sunday
 
 Mostly sunny, with a high near 67.
Sunday Night
 
 Partly cloudy, with a low around 45.
Monday
 
 Patchy fog between 7am and 8am. Otherwise, sunny, with a high near 67.
Monday Night
 
 Mostly clear, with a low around 46.
Tuesday
 
 Mostly sunny, with a high near 68.
Tuesday Night
 
 Partly cloudy, with a low around 48.
Wednesday
 
 Mostly sunny, with a high near 70.
Wednesday Night
 
 Mostly clear, with a low around 47.
Thursday
 
 Patchy fog. Otherwise, sunny, with a high near 70.

 

Forecast from NOAA-NWS for Campbell CA.