Monte Rio, CA Weather & Growing Conditions
Tonight
54°F
Mostly Clear
Mostly clear, with a low around 54. West southwest wind 2 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Mostly Clear | 2 to 8 mph WSW | 0% |
| Saturday | 77°F | Sunny | 1 to 9 mph SSW | 0% |
| Saturday Night | 54°F | Partly Cloudy | 2 to 7 mph WNW | 0% |
| Sunday | 72°F | Partly Sunny | 1 to 8 mph W | 0% |
| Sunday Night | 53°F | Patchy Fog | 1 to 7 mph W | 0% |
| Monday | 73°F | Areas Of Fog then Mostly Sunny | 1 to 7 mph W | 0% |
| Monday Night | 54°F | Patchy Fog | 1 to 7 mph WNW | 0% |
| Tuesday | 76°F | Patchy Fog then Sunny | 0 to 7 mph W | 0% |
| Tuesday Night | 54°F | Mostly Clear | 1 to 7 mph NNW | 0% |
| Wednesday | 82°F | Sunny | 0 to 6 mph WNW | 0% |
| Wednesday Night | 59°F | Mostly Clear | 1 to 6 mph NW | 0% |
| Thursday | 83°F | Sunny | 0 to 7 mph W | 0% |
| Thursday Night | 58°F | Partly Cloudy | 2 to 7 mph WNW | 0% |
| Friday | 79°F | Mostly Sunny | 2 to 8 mph WNW | 0% |
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 (6.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.