Sea Ranch, CA Weather & Growing Conditions

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

This Afternoon

71°F

Sunny

Sunny, with a high near 71. Northwest wind around 9 mph.

7-day forecast for Sea Ranch

When	Temp	Forecast	Wind	Precip
This Afternoon	71°F	Sunny	9 mph NW	0%
Tonight	54°F	Mostly Clear	2 to 8 mph NW	0%
Saturday	72°F	Sunny	2 to 9 mph NW	0%
Saturday Night	54°F	Mostly Cloudy	2 to 8 mph NW	0%
Sunday	69°F	Partly Sunny	2 to 8 mph NW	0%
Sunday Night	53°F	Mostly Cloudy then Patchy Fog	2 to 7 mph NW	0%
Monday	71°F	Patchy Fog then Mostly Sunny	2 to 7 mph NW	0%
Monday Night	53°F	Mostly Clear then Areas Of Fog	2 to 7 mph NNW	0%
Tuesday	71°F	Areas Of Fog then Sunny	2 to 9 mph NW	0%
Tuesday Night	54°F	Mostly Clear	2 to 9 mph NNW	0%
Wednesday	74°F	Sunny	2 to 6 mph NW	0%
Wednesday Night	56°F	Partly Cloudy	1 to 6 mph NNW	0%
Thursday	74°F	Mostly Sunny	1 to 6 mph NW	0%
Thursday Night	56°F	Partly Cloudy	2 to 6 mph NW	0%

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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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

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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 19, 2026.