Monte Rio, CA Weather & Growing Conditions
This Afternoon
61°F
Chance Light Rain
A chance of rain. Mostly cloudy. High near 61, with temperatures falling to around 56 in the afternoon. Southeast wind around 7 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 61°F | Chance Light Rain | 7 mph SE | 54% |
| Tonight | 48°F | Chance Light Rain then Mostly Cloudy | 2 to 6 mph NE | 27% |
| Wednesday | 66°F | Patchy Fog then Sunny | 2 to 10 mph NNW | 1% |
| Wednesday Night | 49°F | Partly Cloudy | 5 to 9 mph NNW | 0% |
| Thursday | 70°F | Sunny | 7 mph NNW | 0% |
| Thursday Night | 48°F | Mostly Clear | 2 to 7 mph NNW | 0% |
| Friday | 72°F | Sunny | 1 to 7 mph NW | 0% |
| Friday Night | 51°F | Mostly Clear | 1 to 5 mph NNW | 0% |
| Saturday | 71°F | Sunny | 0 to 5 mph N | 0% |
| Saturday Night | 52°F | Mostly Clear | 5 mph NW | 0% |
| Sunday | 70°F | Mostly Sunny | 1 to 6 mph NW | 0% |
| Sunday Night | 53°F | Mostly Cloudy | 2 to 6 mph NW | 0% |
| Monday | 67°F | Partly Sunny | 2 to 7 mph NW | 4% |
| Monday Night | 51°F | Partly Cloudy | 1 to 7 mph NW | 6% |
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 Nov 4, 2026.