Monte Rio, CA Weather & Growing Conditions
This Afternoon
78°F
Sunny
Sunny. High near 78, with temperatures falling to around 74 in the afternoon. Southwest wind around 9 mph, with gusts as high as 18 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 78°F | Sunny | 9 mph SW | 0% |
| Tonight | 53°F | Mostly Cloudy | 2 to 8 mph SW | 0% |
| Sunday | 73°F | Patchy Fog then Partly Sunny | 1 to 8 mph SSW | 0% |
| Sunday Night | 53°F | Areas Of Fog | 1 to 6 mph NW | 0% |
| Monday | 72°F | Areas Of Fog then Mostly Sunny | 1 to 8 mph W | 0% |
| Monday Night | 52°F | Areas Of Fog | 0 to 7 mph W | 0% |
| Tuesday | 74°F | Areas Of Fog then Mostly Sunny | 0 to 8 mph WNW | 0% |
| Tuesday Night | 53°F | Mostly Clear then Patchy Fog | 1 to 7 mph NW | 0% |
| Wednesday | 80°F | Patchy Fog then Mostly Sunny | 0 to 7 mph WNW | 0% |
| Wednesday Night | 59°F | Partly Cloudy | 1 to 7 mph NW | 0% |
| Thursday | 82°F | Mostly Sunny | 1 to 7 mph WNW | 0% |
| Thursday Night | 59°F | Partly Cloudy | 2 to 7 mph WNW | 1% |
| Friday | 77°F | Mostly Sunny | 2 to 9 mph WNW | 1% |
| Friday Night | 55°F | Partly Cloudy | 2 to 9 mph WNW | 2% |
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.