National Weather Service Forecast for: Monte Rio CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA
Updated: 12:26 pm PST Feb 2, 2026
 
Tonight

Tonight: Mostly clear, with a low around 46. Calm wind.
Mostly Clear

 Tuesday

Tuesday: Sunny, with a high near 69. Calm wind.
Sunny

 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 46. Calm wind.
Mostly Clear

 Wednesday

Wednesday: Sunny, with a high near 70. Calm wind becoming east around 5 mph in the afternoon.
Sunny

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 48. Calm wind.
Mostly Clear

 Thursday

Thursday: Mostly sunny, with a high near 68.
Mostly Sunny

 Thursday
Night
Thursday Night: Mostly cloudy, with a low around 50.
Mostly Cloudy

 Friday

Friday: Partly sunny, with a high near 64.
Partly Sunny

 Friday
Night
Friday Night: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 48.
Partly Cloudy
then Patchy
Fog
Lo 46 °F Hi 69 °F Lo 46 °F Hi 70 °F Lo 48 °F Hi 68 °F Lo 50 °F Hi 64 °F Lo 48 °F

 

Tonight
 
 Mostly clear, with a low around 46. Calm wind.
Tuesday
 
 Sunny, with a high near 69. Calm wind.
Tuesday Night
 
 Mostly clear, with a low around 46. Calm wind.
Wednesday
 
 Sunny, with a high near 70. Calm wind becoming east around 5 mph in the afternoon.
Wednesday Night
 
 Mostly clear, with a low around 48. Calm wind.
Thursday
 
 Mostly sunny, with a high near 68.
Thursday Night
 
 Mostly cloudy, with a low around 50.
Friday
 
 Partly sunny, with a high near 64.
Friday Night
 
 Patchy fog after 3am. Otherwise, partly cloudy, with a low around 48.
Saturday
 
 Partly sunny, with a high near 62.
Saturday Night
 
 A slight chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 49.
Sunday
 
 A chance of rain. Patchy fog. Otherwise, partly sunny, with a high near 62.
Sunday Night
 
 A chance of rain. Mostly cloudy, with a low around 46.
Monday
 
 A chance of rain. Partly sunny, with a high near 58.

 

Forecast from NOAA-NWS for Monte Rio CA.