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Monte Rio, CA Weather & Growing Conditions

Overnight
54°F
Mostly Clear
Mostly clear, with a low around 54. Southwest wind around 2 mph.

7-day forecast

WhenTempForecastWindPrecip
Overnight 54°F Mostly Clear 2 mph SW 0%
Saturday 78°F Patchy Fog then Sunny 1 to 9 mph WNW 0%
Saturday Night 54°F Partly Cloudy then Patchy Fog 2 to 8 mph WSW 0%
Sunday 73°F Patchy Fog then Partly Sunny 2 to 8 mph W 0%
Sunday Night 53°F Areas Of Fog 0 to 6 mph NW 0%
Monday 73°F Areas Of Fog then Mostly Sunny 0 to 8 mph W 0%
Monday Night 53°F Areas Of Fog 0 to 7 mph NW 0%
Tuesday 75°F Areas Of Fog then Mostly Sunny 0 to 8 mph W 0%
Tuesday Night 54°F Mostly Clear then Patchy Fog 0 to 7 mph NW 0%
Wednesday 80°F Patchy Fog then Sunny 0 to 7 mph WNW 0%
Wednesday Night 60°F Partly Cloudy 0 to 7 mph NW 0%
Thursday 81°F Sunny 0 to 7 mph WNW 0%
Thursday Night 58°F Partly Cloudy 1 to 7 mph NW 1%
Friday 76°F Mostly Sunny 1 to 8 mph WNW 1%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Monte Rio, CA

Last spring frost
Jan 29
First fall frost
Dec 30
Growing season
347 days
Hardiness zone
9b

Explore more for Monte Rio, CA: full frost dates · planting calendar · California frost dates

Climate data from the nearest NOAA station, Occidental, Ca (6.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.