NWS Forecast for Monte Rio CA

National Weather Service Forecast for: Monte Rio CA
Issued by: National Weather Service San Francisco Bay Area/Monterey, CA

Updated: 1:40 am PST Dec 5, 2025

Overnight Patchy Frost	Friday Patchy Frost then Sunny	Friday Night Partly Cloudy	Saturday Becoming Sunny	Saturday Night Mostly Clear	Sunday Mostly Sunny	Sunday Night Mostly Clear	Monday Sunny	Monday Night Partly Cloudy
Lo 37 °F	Hi 58 °F	Lo 47 °F	Hi 62 °F	Lo 47 °F	Hi 61 °F	Lo 46 °F	Hi 61 °F	Lo 48 °F

Coastal Flood Advisory
Cold Weather Advisory

Overnight	Patchy frost after 4am. Otherwise, mostly clear, with a low around 37. Calm wind.
Friday	Patchy frost before 8am. Otherwise, sunny, with a high near 58. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Friday Night	Partly cloudy, with a low around 47. North northeast wind 3 to 5 mph.
Saturday	Partly sunny, then gradually becoming sunny, with a high near 62. Calm wind becoming northwest 5 to 9 mph in the morning.
Saturday Night	Mostly clear, with a low around 47. North northwest wind around 7 mph.
Sunday	Mostly sunny, with a high near 61.
Sunday Night	Mostly clear, with a low around 46.
Monday	Sunny, with a high near 61.
Monday Night	Partly cloudy, with a low around 48.
Tuesday	Mostly sunny, with a high near 63.
Tuesday Night	Mostly cloudy, with a low around 50.
Wednesday	Mostly sunny, with a high near 64.
Wednesday Night	Mostly clear, with a low around 49.
Thursday	Sunny, with a high near 64.

Forecast from NOAA-NWS for Monte Rio CA.