National Weather Service Forecast for: Monte Rio CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 1:26 am PDT Jun 22, 2026
 
Today

Today: Patchy fog before 7am.  Otherwise, sunny, with a high near 75. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Patchy Fog
then Sunny
Tonight

Tonight: Patchy fog after 11pm.  Otherwise, increasing clouds, with a low around 51. Southwest wind around 5 mph becoming calm  in the evening.
Patchy Fog
Tuesday

Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 76. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Decreasing
Clouds
Tuesday
Night
Tuesday Night: Patchy fog after 11pm.  Otherwise, partly cloudy, with a low around 52. Southwest wind around 6 mph becoming calm  in the evening.
Patchy Fog
Wednesday

Wednesday: Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 78. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Patchy Fog
then Sunny
Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 53.
Partly Cloudy
Thursday

Thursday: Sunny, with a high near 82.
Sunny
Thursday
Night
Thursday Night: Mostly clear, with a low around 55.
Mostly Clear
Friday

Friday: Sunny, with a high near 78.
Sunny
Hi 75 °F Lo 51 °F Hi 76 °F Lo 52 °F Hi 78 °F Lo 53 °F Hi 82 °F Lo 55 °F Hi 78 °F

 

Today
 
Patchy fog before 7am. Otherwise, sunny, with a high near 75. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tonight
 
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 51. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
 
Mostly cloudy, then gradually becoming sunny, with a high near 76. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tuesday Night
 
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 52. Southwest wind around 6 mph becoming calm in the evening.
Wednesday
 
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 78. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Wednesday Night
 
Partly cloudy, with a low around 53.
Thursday
 
Sunny, with a high near 82.
Thursday Night
 
Mostly clear, with a low around 55.
Friday
 
Sunny, with a high near 78.
Friday Night
 
Mostly clear, with a low around 56.
Saturday
 
Sunny, with a high near 78.
Saturday Night
 
Mostly clear, with a low around 54.
Sunday
 
Sunny, with a high near 82.

 

Forecast from NOAA-NWS for Monte Rio CA.