Rio Dell, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rio Dell, a city in Humboldt County, California.
Today
82°F
Patchy Smoke
Patchy smoke after 11am. Sunny, with a high near 82. North wind 2 to 8 mph.
7-day forecast for Rio Dell
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Patchy Smoke | 2 to 8 mph N | 0% |
| Tonight | 61°F | Patchy Smoke | 0 to 7 mph NNE | 0% |
| Wednesday | 79°F | Patchy Smoke then Sunny | 0 to 10 mph NW | 0% |
| Wednesday Night | 58°F | Partly Cloudy | 0 to 7 mph NW | 0% |
| Thursday | 78°F | Mostly Sunny | 0 to 7 mph NW | 0% |
| Thursday Night | 57°F | Partly Cloudy | 1 to 6 mph NNW | 0% |
| Friday | 77°F | Mostly Sunny | 1 to 7 mph N | 0% |
| Friday Night | 56°F | Partly Cloudy | 1 to 7 mph N | 0% |
| Saturday | 74°F | Mostly Sunny | 1 to 10 mph NNW | 0% |
| Saturday Night | 54°F | Partly Cloudy | 3 to 10 mph NNW | 2% |
| Sunday | 69°F | Mostly Sunny | 3 to 12 mph NNW | 0% |
| Sunday Night | 53°F | Partly Cloudy | 5 to 12 mph NNW | 1% |
| Monday | 68°F | Mostly Sunny | 5 to 10 mph NNW | 0% |
| Monday Night | 53°F | Partly Cloudy | 3 to 10 mph NNW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Rio Dell (40.496, -124.115). Updated through the day.
Growing snapshot for Rio Dell
Last spring frost
Feb 1
First fall frost
Dec 19
Growing season
328 days
Hardiness zone
9b
More local growing data for Rio Dell: nearby ZIP 95562 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
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Fairhaven
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Fieldbrook
Fields Landing
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Garberville
Hoopa
Humboldt Hill
Hydesville
Indianola
Kep'el
Loleta
Manila
McKinleyville
Miranda
Myers Flat
Myrtletown
Orick
Phillipsville
Pine Hills
Redcrest
Redway
Climate data from the nearest NOAA station, Scotia, Ca (2.9 mi from Rio Dell). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.