National Weather Service Forecast for: Riverside Municipal CA
Issued by: National Weather Service San Diego, CA
Updated: 8:40 pm PST Dec 22, 2025
 
Tonight

Tonight: Patchy fog. Otherwise, mostly cloudy, with a low around 51. Calm wind.
Patchy Fog


 Tuesday

Tuesday: Showers likely, mainly after 4pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 68. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Slight Chance
Showers and
Patchy Fog
then Showers
Likely
 Tuesday
Night
Tuesday Night: Showers. The rain could be heavy at times. Low around 54. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Heavy Rain


 Wednesday

Wednesday: Showers, with thunderstorms also possible after 10am. Some of the storms could produce heavy rainfall. High near 64. South wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Heavy Rain


 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm. Low around 54. West wind 10 to 15 mph becoming light and variable. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Showers


 Christmas
Day
Christmas Day: Showers. High near 64. Chance of precipitation is 80%.
Showers


 Thursday
Night
Thursday Night: Showers. Low around 50. Chance of precipitation is 90%.
Showers


 Friday

Friday: Showers. Mostly cloudy, with a high near 61.
Showers


 Friday
Night
Friday Night: A chance of showers. Mostly cloudy, with a low around 42.
Chance
Showers
Lo 51 °F Hi 68 °F Lo 54 °F Hi 64 °F Lo 54 °F Hi 64 °F Lo 50 °F Hi 61 °F Lo 42 °F

Flood Watch
Wind Advisory
 

Tonight
 
 Patchy fog. Otherwise, mostly cloudy, with a low around 51. Calm wind.
Tuesday
 
 Showers likely, mainly after 4pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 68. Calm wind becoming south around 5 mph in the afternoon. 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. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday
 
 Showers, with thunderstorms also possible after 10am. Some of the storms could produce heavy rainfall. High near 64. South wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Wednesday Night
 
 Showers and possibly a thunderstorm. Low around 54. West wind 10 to 15 mph becoming light and variable. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Christmas Day
 
 Showers. High near 64. Chance of precipitation is 80%.
Thursday Night
 
 Showers. Low around 50. Chance of precipitation is 90%.
Friday
 
 Showers. Mostly cloudy, with a high near 61.
Friday Night
 
 A chance of showers. Mostly cloudy, with a low around 42.
Saturday
 
 A slight chance of showers. Mostly sunny, with a high near 62.
Saturday Night
 
 A slight chance of showers. Partly cloudy, with a low around 41.
Sunday
 
 Sunny, with a high near 65.
Sunday Night
 
 Partly cloudy, with a low around 43.
Monday
 
 A slight chance of showers. Mostly sunny, with a high near 68.

 

Forecast from NOAA-NWS for Riverside Municipal CA.