National Weather Service Forecast for: Los Altos CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 1:24 pm PST Dec 17, 2025
 
Tonight

Tonight: Patchy dense fog after 7pm. Otherwise, mostly cloudy, with a low around 45. Light and variable wind.
Patchy Dense
Fog
 Thursday

Thursday: Patchy dense fog before 10am. Otherwise, partly sunny, with a high near 62. Light and variable wind.
Patchy Dense
Fog then
Mostly Sunny
 Thursday
Night
Thursday Night: A 20 percent chance of rain after 10pm. Patchy fog after midnight. Otherwise, increasing clouds, with a low around 48. Calm wind.
Slight Chance
Rain and
Patchy Fog
 Friday

Friday: Rain, mainly after 4pm. Areas of fog before 10am. High near 63. Calm wind becoming south southwest 5 to 7 mph in the morning. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Chance Rain
and Areas Fog
then Rain
 Friday
Night
Friday Night: Rain, mainly before 4am. Patchy fog after 4am. Low around 54. South wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Rain and
Patchy Fog
 Saturday

Saturday: Rain, mainly after 10am. Patchy fog before 10am. High near 61. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain and
Patchy Fog
 Saturday
Night
Saturday Night: Rain before 10pm, then showers and possibly a thunderstorm after 10pm. Low around 55. Chance of precipitation is 90%.
Showers

 Sunday

Sunday: Showers and possibly a thunderstorm. Cloudy, with a high near 60.
Showers

 Sunday
Night
Sunday Night: Rain. Cloudy, with a low around 53.
Rain
Lo 45 °F Hi 62 °F Lo 48 °F Hi 63 °F Lo 54 °F Hi 61 °F Lo 55 °F Hi 60 °F Lo 53 °F

 

Tonight
 
 Patchy dense fog after 7pm. Otherwise, mostly cloudy, with a low around 45. Light and variable wind.
Thursday
 
 Patchy dense fog before 10am. Otherwise, partly sunny, with a high near 62. Light and variable wind.
Thursday Night
 
 A 20 percent chance of rain after 10pm. Patchy fog after midnight. Otherwise, increasing clouds, with a low around 48. Calm wind.
Friday
 
 Rain, mainly after 4pm. Areas of fog before 10am. High near 63. Calm wind becoming south southwest 5 to 7 mph in the morning. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
 
 Rain, mainly before 4am. Patchy fog after 4am. Low around 54. South wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
 
 Rain, mainly after 10am. Patchy fog before 10am. High near 61. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
 
 Rain before 10pm, then showers and possibly a thunderstorm after 10pm. Low around 55. Chance of precipitation is 90%.
Sunday
 
 Showers and possibly a thunderstorm. Cloudy, with a high near 60.
Sunday Night
 
 Rain. Cloudy, with a low around 53.
Monday
 
 Rain likely. Cloudy, with a high near 58.
Monday Night
 
 Rain likely. Cloudy, with a low around 49.
Tuesday
 
 Rain likely. Mostly cloudy, with a high near 58.
Tuesday Night
 
 Rain. Cloudy, with a low around 49.
Wednesday
 
 Rain likely. Cloudy, with a high near 58.

 

Forecast from NOAA-NWS for Los Altos CA.