Sea Ranch, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Sea Ranch, a community in Sonoma County, California.

Overnight

47°F

Partly Cloudy

Partly cloudy, with a low around 47. East northeast wind around 1 mph.

7-day forecast for Sea Ranch

When	Temp	Forecast	Wind	Precip
Overnight	47°F	Partly Cloudy	1 mph ENE	0%
Wednesday	63°F	Mostly Sunny	1 to 9 mph N	3%
Wednesday Night	49°F	Mostly Cloudy	6 mph NNW	1%
Thursday	67°F	Sunny	3 to 8 mph NNW	0%
Thursday Night	47°F	Mostly Clear	2 to 7 mph NNW	0%
Friday	67°F	Mostly Sunny	2 to 8 mph NNW	0%
Friday Night	49°F	Mostly Clear	0 to 7 mph NNW	0%
Saturday	67°F	Sunny	0 to 3 mph NW	0%
Saturday Night	50°F	Partly Cloudy then Patchy Fog	3 mph NNW	1%
Sunday	66°F	Patchy Fog then Mostly Sunny	2 to 7 mph NNW	1%
Sunday Night	51°F	Mostly Cloudy	2 to 6 mph NNW	2%
Monday	64°F	Partly Sunny	2 to 6 mph NW	4%
Monday Night	50°F	Partly Cloudy	2 to 6 mph NNW	4%
Tuesday	64°F	Slight Chance Light Rain	5 mph NW	16%

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

Nearby towns & communities

Bloomfield Bodega Bodega Bay Boyes Hot Springs Calistoga Carmet Cazadero Cloverdale Cotati El Verano Eldridge Fetters Hot Springs-Agua Caliente Forestville Fulton Geyserville Glen Ellen Graton Guerneville Healdsburg Jenner Kenwood Larkfield-Wikiup Monte Rio Occidental Penngrove Petaluma Rohnert Park Salmon Creek Santa Rosa Sebastopol

All California locations ›

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 Nov 4, 2026.