Monte Rio, CA Weather & Growing Conditions
Overnight
52°F
Haze
Haze and areas of fog. Partly cloudy, with a low around 52. South southwest wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Haze | 1 mph SSW | 0% |
| Tuesday | 78°F | Haze then Sunny | 1 to 8 mph SSW | 1% |
| Tuesday Night | 51°F | Areas Of Fog | 0 to 3 mph SSW | 1% |
| Wednesday | 76°F | Areas Of Fog then Mostly Sunny | 1 to 7 mph SSW | 1% |
| Wednesday Night | 51°F | Areas Of Fog | 0 to 5 mph WNW | 0% |
| Thursday | 76°F | Areas Of Fog then Sunny | 0 to 7 mph WSW | 0% |
| Thursday Night | 52°F | Areas Of Fog | 0 to 6 mph W | 0% |
| Friday | 84°F | Sunny | 0 to 7 mph W | 0% |
| Friday Night | 56°F | Partly Cloudy | 0 to 7 mph WNW | 0% |
| Saturday | 85°F | Sunny | 0 to 7 mph WNW | 0% |
| Saturday Night | 59°F | Mostly Clear | 3 to 7 mph WNW | 0% |
| Sunday | 85°F | Sunny | 2 to 9 mph WNW | 0% |
| Sunday Night | 56°F | Mostly Clear | 1 to 9 mph NW | 0% |
| Monday | 76°F | Sunny | 1 to 8 mph WSW | 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 (6.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.