National Weather Service Forecast for: Rancho San Diego CA
Issued by: National Weather Service San Diego, CA
Updated: 12:04 pm PST Feb 1, 2026
 
Tonight

Tonight: Mostly clear, with a low around 50. Calm wind.
Mostly Clear
 Monday

Monday: Mostly sunny, with a high near 75. Calm wind becoming west around 5 mph in the afternoon.
Mostly Sunny
 Monday
Night
Monday Night: Partly cloudy, with a low around 49. Calm wind.
Partly Cloudy
 Tuesday

Tuesday: Sunny, with a high near 81. Calm wind becoming northwest around 5 mph in the afternoon.
Sunny
 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 52. Calm wind becoming northeast around 5 mph.
Mostly Clear
 Wednesday

Wednesday: Sunny, with a high near 85.
Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 57.
Mostly Clear
 Thursday

Thursday: Mostly sunny, with a high near 81.
Mostly Sunny
 Thursday
Night
Thursday Night: Partly cloudy, with a low around 53.
Partly Cloudy
Lo 50 °F Hi 75 °F Lo 49 °F Hi 81 °F Lo 52 °F Hi 85 °F Lo 57 °F Hi 81 °F Lo 53 °F

 

Tonight
 
 Mostly clear, with a low around 50. Calm wind.
Monday
 
 Mostly sunny, with a high near 75. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
 
 Partly cloudy, with a low around 49. Calm wind.
Tuesday
 
 Sunny, with a high near 81. Calm wind becoming northwest around 5 mph in the afternoon.
Tuesday Night
 
 Mostly clear, with a low around 52. Calm wind becoming northeast around 5 mph.
Wednesday
 
 Sunny, with a high near 85.
Wednesday Night
 
 Mostly clear, with a low around 57.
Thursday
 
 Mostly sunny, with a high near 81.
Thursday Night
 
 Partly cloudy, with a low around 53.
Friday
 
 Mostly sunny, with a high near 76.
Friday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 50.
Saturday
 
 Patchy fog. Otherwise, mostly sunny, with a high near 75.
Saturday Night
 
 Patchy fog. Otherwise, partly cloudy, with a low around 50.
Sunday
 
 Patchy fog. Otherwise, mostly sunny, with a high near 78.

 

Forecast from NOAA-NWS for Rancho San Diego CA.