Sea Ranch, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sea Ranch, a community in Sonoma County, California.
Tonight
53°F
Mostly Cloudy
Mostly cloudy, with a low around 53. Northwest wind 2 to 7 mph.
7-day forecast for Sea Ranch
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Mostly Cloudy | 2 to 7 mph NW | 0% |
| Sunday | 69°F | Partly Sunny | 2 to 8 mph NW | 0% |
| Sunday Night | 53°F | Mostly Cloudy then Patchy Fog | 1 to 7 mph NW | 0% |
| Monday | 70°F | Patchy Fog then Mostly Sunny | 2 to 7 mph NW | 0% |
| Monday Night | 53°F | Partly Cloudy then Patchy Fog | 1 to 6 mph NW | 0% |
| Tuesday | 71°F | Patchy Fog then Sunny | 1 to 10 mph NW | 0% |
| Tuesday Night | 53°F | Mostly Clear | 3 to 10 mph NNW | 0% |
| Wednesday | 73°F | Mostly Sunny | 3 to 9 mph NNW | 0% |
| Wednesday Night | 56°F | Partly Cloudy | 3 to 9 mph NNW | 0% |
| Thursday | 74°F | Mostly Sunny | 3 to 9 mph NW | 0% |
| Thursday Night | 56°F | Partly Cloudy | 3 to 9 mph NW | 1% |
| Friday | 70°F | Mostly Sunny | 3 to 10 mph NW | 1% |
| Friday Night | 53°F | Partly Cloudy | 2 to 9 mph NW | 2% |
| Saturday | 66°F | Mostly Sunny | 2 to 7 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Sea Ranch (38.725, -123.458). Updated through the day.
Growing snapshot for Sea Ranch
Last spring frost
Feb 26
First fall frost
Dec 27
Growing season
310 days
Hardiness zone
10a
More local growing data for Sea Ranch: nearby ZIP 95497 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Ft Ross, Ca (18.5 mi from Sea Ranch). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.