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

Overnight: Patchy fog after 4am. Otherwise, mostly clear, with a low around 47. West wind 3 to 5 mph.
Patchy Fog
 Monday

Monday: Patchy fog before 8am. Otherwise, sunny, with a high near 65. Calm wind becoming north around 5 mph in the afternoon.
Patchy Fog
then Sunny
 Monday
Night
Monday Night: Partly cloudy, with a low around 46. Calm wind.
Partly Cloudy
 Tuesday

Tuesday: Sunny, with a high near 68. East northeast wind around 6 mph.
Sunny
 Tuesday
Night
Tuesday Night: Clear, with a low around 47. Light east northeast wind.
Clear
 Wednesday

Wednesday: Sunny, with a high near 69.
Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 48.
Mostly Clear
 Thursday

Thursday: Sunny, with a high near 68.
Sunny
 Thursday
Night
Thursday Night: Mostly cloudy, with a low around 50.
Mostly Cloudy
Lo 47 °F Hi 65 °F Lo 46 °F Hi 68 °F Lo 47 °F Hi 69 °F Lo 48 °F Hi 68 °F Lo 50 °F

 

Overnight
 
 Patchy fog after 4am. Otherwise, mostly clear, with a low around 47. West wind 3 to 5 mph.
Monday
 
 Patchy fog before 8am. Otherwise, sunny, with a high near 65. Calm wind becoming north around 5 mph in the afternoon.
Monday Night
 
 Partly cloudy, with a low around 46. Calm wind.
Tuesday
 
 Sunny, with a high near 68. East northeast wind around 6 mph.
Tuesday Night
 
 Clear, with a low around 47. Light east northeast wind.
Wednesday
 
 Sunny, with a high near 69.
Wednesday Night
 
 Mostly clear, with a low around 48.
Thursday
 
 Sunny, with a high near 68.
Thursday Night
 
 Mostly cloudy, with a low around 50.
Friday
 
 Mostly sunny, with a high near 65.
Friday Night
 
 Partly cloudy, with a low around 49.
Saturday
 
 Mostly sunny, with a high near 65.
Saturday Night
 
 Partly cloudy, with a low around 50.
Sunday
 
 A slight chance of rain. Partly sunny, with a high near 65.

 

Forecast from NOAA-NWS for Hillsborough CA.