National Weather Service Forecast for: Rosemont CA
Issued by: National Weather Service Sacramento, CA
Updated: 1:21 am PST Dec 17, 2025
 
Overnight

Overnight: A chance of showers before 4am, then a chance of showers and thunderstorms between 4am and 5am, then showers likely and possibly a thunderstorm after 5am. Patchy fog. Otherwise, cloudy, with a steady temperature around 49. South southeast wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Showers
Likely and
Patchy Fog

 Wednesday

Wednesday: Showers likely and possibly a thunderstorm before 10am, then a slight chance of showers between 10am and 11am. Patchy fog before noon. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 60. South southeast wind 5 to 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Showers
Likely and
Patchy Fog
then Partly
Sunny
 Wednesday
Night
Wednesday Night: A slight chance of showers before 10pm, then a slight chance of showers after 3am. Patchy fog. Otherwise, increasing clouds, with a low around 45. Calm wind. Chance of precipitation is 20%.
Slight Chance
Showers and
Patchy Fog

 Thursday

Thursday: Mostly cloudy, with a high near 57. Light south wind.
Mostly Cloudy


 Thursday
Night
Thursday Night: A 30 percent chance of showers, mainly after 4am. Mostly cloudy, with a low around 50. Southeast wind 3 to 5 mph.
Chance
Showers

 Friday

Friday: Showers likely, mainly after 10am. Cloudy, with a high near 56. Chance of precipitation is 70%.
Showers
Likely

 Friday
Night
Friday Night: Showers. Low around 55. Chance of precipitation is 90%.
Showers


 Saturday

Saturday: Showers. Cloudy, with a high near 56.
Showers


 Saturday
Night
Saturday Night: Showers. Cloudy, with a low around 55.
Showers
Lo 49 °F Hi 60 °F Lo 45 °F Hi 57 °F Lo 50 °F Hi 56 °F Lo 55 °F Hi 56 °F Lo 55 °F

 

Overnight
 
 A chance of showers before 4am, then a chance of showers and thunderstorms between 4am and 5am, then showers likely and possibly a thunderstorm after 5am. Patchy fog. Otherwise, cloudy, with a steady temperature around 49. South southeast wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
 
 Showers likely and possibly a thunderstorm before 10am, then a slight chance of showers between 10am and 11am. Patchy fog before noon. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 60. South southeast wind 5 to 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
 
 A slight chance of showers before 10pm, then a slight chance of showers after 3am. Patchy fog. Otherwise, increasing clouds, with a low around 45. Calm wind. Chance of precipitation is 20%.
Thursday
 
 Mostly cloudy, with a high near 57. Light south wind.
Thursday Night
 
 A 30 percent chance of showers, mainly after 4am. Mostly cloudy, with a low around 50. Southeast wind 3 to 5 mph.
Friday
 
 Showers likely, mainly after 10am. Cloudy, with a high near 56. Chance of precipitation is 70%.
Friday Night
 
 Showers. Low around 55. Chance of precipitation is 90%.
Saturday
 
 Showers. Cloudy, with a high near 56.
Saturday Night
 
 Showers. Cloudy, with a low around 55.
Sunday
 
 Showers. Cloudy, with a high near 58.
Sunday Night
 
 Showers. Cloudy, with a low around 56.
Monday
 
 Showers likely. Cloudy, with a high near 56.
Monday Night
 
 Showers likely. Cloudy, with a low around 52.
Tuesday
 
 Showers likely. Cloudy, with a high near 54.

 

Forecast from NOAA-NWS for Rosemont CA.