Rio Dell, CA Weather & Growing Conditions
Tonight
52°F
Mostly Cloudy
Mostly cloudy, with a low around 52. North wind 3 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Mostly Cloudy | 3 to 8 mph N | 4% |
| Saturday | 63°F | Mostly Cloudy | 3 to 8 mph NNW | 4% |
| Saturday Night | 52°F | Mostly Cloudy | 3 to 8 mph NNW | 5% |
| Sunday | 63°F | Mostly Cloudy | 3 to 8 mph NNW | 4% |
| Sunday Night | 53°F | Mostly Cloudy | 2 to 8 mph N | 4% |
| Monday | 66°F | Partly Sunny | 2 to 7 mph N | 0% |
| Monday Night | 53°F | Mostly Cloudy | 2 to 7 mph N | 0% |
| Tuesday | 65°F | Partly Sunny | 3 to 8 mph N | 0% |
| Tuesday Night | 52°F | Partly Cloudy | 2 to 8 mph N | 0% |
| Wednesday | 70°F | Patchy Fog then Mostly Sunny | 1 to 6 mph N | 0% |
| Wednesday Night | 53°F | Partly Cloudy | 0 to 6 mph N | 0% |
| Thursday | 71°F | Mostly Sunny | 0 to 3 mph N | 1% |
| Thursday Night | 54°F | Mostly Cloudy | 0 to 3 mph N | 1% |
| Friday | 67°F | Mostly Sunny | 0 to 6 mph N | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Rio Dell, CA
Last spring frost
Feb 1
First fall frost
Dec 19
Growing season
328 days
Hardiness zone
9b
Explore more for Rio Dell, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Scotia, Ca (5.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.