National Weather Service Forecast for: Rancho Cucamonga CA
Issued by: National Weather Service San Diego, CA
Updated: 1:15 am PDT Apr 14, 2025
 
Overnight

Overnight: Patchy fog.  Otherwise, mostly cloudy, with a low around 52. Southwest wind around 5 mph.
Patchy Fog


Monday

Monday: Patchy fog before 11am.  Otherwise, partly sunny, with a high near 76. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Patchy Fog
then Partly
Sunny

Monday
Night
Monday Night: Patchy drizzle and fog after 11pm.  Mostly cloudy, with a low around 51. West wind 10 to 15 mph decreasing to 5 to 10 mph in the evening. Winds could gust as high as 25 mph.
Patchy
Drizzle and
Patchy Fog

Tuesday

Tuesday: Patchy drizzle and fog before 11am.  Cloudy through mid morning, then gradual clearing, with a high near 73. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Patchy
Drizzle and
Patchy Fog
then Mostly
Sunny
Tuesday
Night
Tuesday Night: Patchy fog after 11pm.  Otherwise, increasing clouds, with a low around 50. West wind 5 to 15 mph, with gusts as high as 20 mph.
Patchy Fog


Wednesday

Wednesday: Patchy drizzle and fog before 11am.  Cloudy, then gradually becoming mostly sunny, with a high near 66.
Patchy
Drizzle and
Patchy Fog
then Mostly
Sunny
Wednesday
Night
Wednesday Night: Patchy drizzle after 11pm.  Mostly cloudy, with a low around 51.
Patchy
Drizzle

Thursday

Thursday: Patchy drizzle before 11am.  Mostly cloudy, with a high near 63.
Patchy
Drizzle then
Partly Sunny

Thursday
Night
Thursday Night: A slight chance of showers.  Mostly cloudy, with a low around 50.
Slight Chance
Showers

Lo 52 °F Hi 76 °F Lo 51 °F Hi 73 °F Lo 50 °F Hi 66 °F Lo 51 °F Hi 63 °F Lo 50 °F

 

Overnight
 
Patchy fog. Otherwise, mostly cloudy, with a low around 52. Southwest wind around 5 mph.
Monday
 
Patchy fog before 11am. Otherwise, partly sunny, with a high near 76. Light southwest wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Monday Night
 
Patchy drizzle and fog after 11pm. Mostly cloudy, with a low around 51. West wind 10 to 15 mph decreasing to 5 to 10 mph in the evening. Winds could gust as high as 25 mph.
Tuesday
 
Patchy drizzle and fog before 11am. Cloudy through mid morning, then gradual clearing, with a high near 73. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
 
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 50. West wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday
 
Patchy drizzle and fog before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 66.
Wednesday Night
 
Patchy drizzle after 11pm. Mostly cloudy, with a low around 51.
Thursday
 
Patchy drizzle before 11am. Mostly cloudy, with a high near 63.
Thursday Night
 
A slight chance of showers. Mostly cloudy, with a low around 50.
Friday
 
A chance of showers. Mostly cloudy, with a high near 61.
Friday Night
 
A slight chance of showers. Mostly cloudy, with a low around 48.
Saturday
 
Mostly sunny, with a high near 69.
Saturday Night
 
Partly cloudy, with a low around 50.
Sunday
 
Sunny, with a high near 72.

 

Forecast from NOAA-NWS for Rancho Cucamonga CA.