National Weather Service Forecast for: Rosemont CA
Issued by: National Weather Service Sacramento, CA
Updated: 2:01 pm PDT Sep 12, 2026
 
Tonight

Tonight: Clear, with a low around 55. South southeast wind 5 to 8 mph.
Clear
 Sunday

Sunday: Sunny, with a high near 82. Light and variable wind becoming northwest around 6 mph in the afternoon.
Sunny
 Sunday
Night
Sunday Night: Mostly clear, with a low around 56. Northwest wind around 5 mph becoming calm in the evening.
Mostly Clear
 Monday

Monday: Sunny, with a high near 90. Calm wind becoming northwest around 5 mph in the afternoon.
Sunny
 Monday
Night
Monday Night: Clear, with a low around 59. Light and variable wind becoming southwest around 6 mph after midnight.
Clear
 Tuesday

Tuesday: Sunny, with a high near 90.
Sunny
 Tuesday
Night
Tuesday Night: Clear, with a low around 59.
Clear
 Wednesday

Wednesday: Sunny, with a high near 89.
Sunny
 Wednesday
Night
Wednesday Night: Clear, with a low around 58.
Clear
Lo 55 °F Hi 82 °F Lo 56 °F Hi 90 °F Lo 59 °F Hi 90 °F Lo 59 °F Hi 89 °F Lo 58 °F

 

Tonight
 
 Clear, with a low around 55. South southeast wind 5 to 8 mph.
Sunday
 
 Sunny, with a high near 82. Light and variable wind becoming northwest around 6 mph in the afternoon.
Sunday Night
 
 Mostly clear, with a low around 56. Northwest wind around 5 mph becoming calm in the evening.
Monday
 
 Sunny, with a high near 90. Calm wind becoming northwest around 5 mph in the afternoon.
Monday Night
 
 Clear, with a low around 59. Light and variable wind becoming southwest around 6 mph after midnight.
Tuesday
 
 Sunny, with a high near 90.
Tuesday Night
 
 Clear, with a low around 59.
Wednesday
 
 Sunny, with a high near 89.
Wednesday Night
 
 Clear, with a low around 58.
Thursday
 
 Sunny, with a high near 91.
Thursday Night
 
 Mostly clear, with a low around 59.
Friday
 
 Sunny, with a high near 92.
Friday Night
 
 Mostly clear, with a low around 59.
Saturday
 
 Sunny, with a high near 88.

 

Forecast from NOAA-NWS for Rosemont CA.