National Weather Service Forecast for: 2 Miles NW Rancho Cucamonga CA
Issued by: National Weather Service San Diego, CA
Updated: 12:35 pm PST Dec 22, 2025
 
Tonight

Tonight: Mostly cloudy, with a low around 53. Calm wind.
Mostly Cloudy

 Tuesday

Tuesday: Showers likely, mainly after 4pm. Mostly cloudy, with a high near 64. Calm wind becoming east around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Slight Chance
Showers then
Showers
Likely
 Tuesday
Night
Tuesday Night: Showers. The rain could be heavy at times. Low around 54. Northeast wind 5 to 10 mph becoming southeast after midnight. Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.
Heavy Rain

 Wednesday

Wednesday: Showers, with thunderstorms also possible after 10am. Some of the storms could produce heavy rainfall. High near 60. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.
Heavy Rain

 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 52. Southwest wind 5 to 10 mph becoming light and variable. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Heavy Rain

 Christmas
Day
Christmas Day: Showers. The rain could be heavy at times. High near 59. Chance of precipitation is 80%.
Heavy Rain

 Thursday
Night
Thursday Night: Showers. The rain could be heavy at times. Low around 50. Chance of precipitation is 100%.
Heavy Rain

 Friday

Friday: Showers. Mostly cloudy, with a high near 57.
Showers

 Friday
Night
Friday Night: Showers likely, mainly before 10pm. The rain could be heavy at times. Mostly cloudy, with a low around 44.
Heavy Rain
Lo 53 °F Hi 64 °F Lo 54 °F Hi 60 °F Lo 52 °F Hi 59 °F Lo 50 °F Hi 57 °F Lo 44 °F

Flood Watch
Wind Advisory
 

Tonight
 
 Mostly cloudy, with a low around 53. Calm wind.
Tuesday
 
 Showers likely, mainly after 4pm. Mostly cloudy, with a high near 64. Calm wind becoming east around 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
 
 Showers. The rain could be heavy at times. Low around 54. Northeast wind 5 to 10 mph becoming southeast after midnight. Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.
Wednesday
 
 Showers, with thunderstorms also possible after 10am. Some of the storms could produce heavy rainfall. High near 60. Light and variable wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.
Wednesday Night
 
 Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 52. Southwest wind 5 to 10 mph becoming light and variable. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Christmas Day
 
 Showers. The rain could be heavy at times. High near 59. Chance of precipitation is 80%.
Thursday Night
 
 Showers. The rain could be heavy at times. Low around 50. Chance of precipitation is 100%.
Friday
 
 Showers. Mostly cloudy, with a high near 57.
Friday Night
 
 Showers likely, mainly before 10pm. The rain could be heavy at times. Mostly cloudy, with a low around 44.
Saturday
 
 A chance of showers, mainly between 10am and 4pm. Partly sunny, with a high near 58.
Saturday Night
 
 A slight chance of showers. Partly cloudy, with a low around 45.
Sunday
 
 Mostly sunny, with a high near 60.
Sunday Night
 
 Partly cloudy, with a low around 46.
Monday
 
 A slight chance of showers. Mostly sunny, with a high near 63.

 

Forecast from NOAA-NWS for 2 Miles NW Rancho Cucamonga CA.