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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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.