National Weather Service Forecast for: Monte Rio CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 12:48 am PST Dec 23, 2025
 
Overnight

Overnight: Rain likely. Areas of dense fog. Otherwise, cloudy, with a low around 50. East wind around 5 mph becoming calm. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Rain Likely
and Areas
Dense Fog
 Tuesday

Tuesday: Rain. Patchy fog before 7am. High near 55. South southeast wind 9 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Rain and
Patchy Fog

 Tuesday
Night
Tuesday Night: Rain and possibly a thunderstorm. Low around 49. Breezy, with a southeast wind 10 to 15 mph increasing to 19 to 24 mph after midnight. Winds could gust as high as 60 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Rain and
Breezy

 Wednesday

Wednesday: Rain, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. Some of the storms could be severe. Areas of dense fog before 1pm. High near 53. Southwest wind 5 to 11 mph becoming southeast in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Severe
T-Storms
and Areas
Dense Fog
 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm. Some of the storms could be severe and produce heavy rainfall. Low around 49. South southeast wind 15 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Severe
T-Storms

 Christmas
Day
Christmas Day: Showers and possibly a thunderstorm. High near 50. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Showers

 Thursday
Night
Thursday Night: Showers and possibly a thunderstorm before 4am, then rain after 4am. Low around 46. Chance of precipitation is 100%.
Showers

 Friday

Friday: Rain before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then rain likely and possibly a thunderstorm after 4pm. Cloudy, with a high near 50.
Showers

 Friday
Night
Friday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 42.
Rain Likely
Lo 50 °F Hi 55 °F Lo 49 °F Hi 53 °F Lo 49 °F Hi 50 °F Lo 46 °F Hi 50 °F Lo 42 °F

Flood Watch
Wind Advisory
 

Overnight
 
 Rain likely. Areas of dense fog. Otherwise, cloudy, with a low around 50. East wind around 5 mph becoming calm. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
 
 Rain. Patchy fog before 7am. High near 55. South southeast wind 9 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
 
 Rain and possibly a thunderstorm. Low around 49. Breezy, with a southeast wind 10 to 15 mph increasing to 19 to 24 mph after midnight. Winds could gust as high as 60 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
 
 Rain, mainly before 4pm, then showers and possibly a thunderstorm after 4pm. Some of the storms could be severe. Areas of dense fog before 1pm. High near 53. Southwest wind 5 to 11 mph becoming southeast in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
 
 Showers and possibly a thunderstorm. Some of the storms could be severe and produce heavy rainfall. Low around 49. South southeast wind 15 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Christmas Day
 
 Showers and possibly a thunderstorm. High near 50. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Thursday Night
 
 Showers and possibly a thunderstorm before 4am, then rain after 4am. Low around 46. Chance of precipitation is 100%.
Friday
 
 Rain before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then rain likely and possibly a thunderstorm after 4pm. Cloudy, with a high near 50.
Friday Night
 
 Rain likely, mainly before 10pm. Mostly cloudy, with a low around 42.
Saturday
 
 Patchy fog before 11am. Otherwise, mostly sunny, with a high near 53.
Saturday Night
 
 Mostly clear, with a low around 39.
Sunday
 
 Sunny, with a high near 53.
Sunday Night
 
 Mostly clear, with a low around 40.
Monday
 
 Sunny, with a high near 54.

 

Forecast from NOAA-NWS for Monte Rio CA.