Rio Dell, CA Weather & Growing Conditions
Tonight
48°F
Partly Cloudy
Partly cloudy, with a low around 48. Southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 48°F | Partly Cloudy | 5 mph SW | 1% |
| Wednesday | 60°F | Partly Sunny | 2 to 8 mph W | 10% |
| Wednesday Night | 50°F | Mostly Cloudy | 5 mph NW | 10% |
| Thursday | 60°F | Mostly Sunny | 3 to 7 mph NNW | 0% |
| Thursday Night | 47°F | Mostly Cloudy | 1 to 7 mph NNE | 0% |
| Friday | 62°F | Mostly Sunny | 0 to 3 mph NE | 0% |
| Friday Night | 49°F | Partly Cloudy | 3 mph NE | 0% |
| Saturday | 65°F | Mostly Sunny | 2 mph S | 2% |
| Saturday Night | 53°F | Mostly Cloudy then Slight Chance Light Rain | 2 mph SSE | 16% |
| Sunday | 62°F | Slight Chance Light Rain then Mostly Cloudy | 2 mph SE | 16% |
| Sunday Night | 52°F | Mostly Cloudy then Slight Chance Light Rain | 2 mph E | 17% |
| Monday | 60°F | Slight Chance Light Rain then Mostly Cloudy | 0 to 3 mph SSW | 17% |
| Monday Night | 50°F | Slight Chance Light Rain | 3 mph S | 21% |
| Tuesday | 62°F | Chance Light Rain | 2 mph S | 32% |
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 Nov 4, 2026.