Sebastopol, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Sebastopol, a city in Sonoma County, California.

Overnight

52°F

Areas Of Fog

Areas of fog after 2am. Partly cloudy, with a low around 52. West wind around 1 mph.

7-day forecast for Sebastopol

When	Temp	Forecast	Wind	Precip
Overnight	52°F	Areas Of Fog	1 mph W	0%
Saturday	83°F	Areas Of Fog then Mostly Sunny	0 to 9 mph SSW	0%
Saturday Night	51°F	Partly Cloudy then Areas Of Fog	0 to 6 mph S	0%
Sunday	78°F	Areas Of Fog then Mostly Cloudy	0 to 7 mph SSW	0%
Sunday Night	51°F	Areas Of Fog	0 to 5 mph WSW	0%
Monday	78°F	Areas Of Fog then Mostly Sunny	0 to 8 mph SW	0%
Monday Night	50°F	Areas Of Fog	0 to 8 mph WSW	0%
Tuesday	80°F	Areas Of Fog then Mostly Sunny	0 to 7 mph WSW	0%
Tuesday Night	50°F	Areas Of Fog	0 to 7 mph WNW	0%
Wednesday	87°F	Areas Of Fog then Mostly Sunny	0 to 7 mph W	0%
Wednesday Night	54°F	Partly Cloudy	0 to 7 mph WNW	0%
Thursday	89°F	Mostly Sunny	0 to 7 mph W	0%
Thursday Night	53°F	Partly Cloudy	0 to 7 mph WNW	0%
Friday	83°F	Mostly Sunny	0 to 8 mph W	1%

Forecast source: National Weather Service (api.weather.gov) for Sebastopol (38.400, -122.828). Updated through the day.

Growing snapshot for Sebastopol

Last spring frost

Mar 20

First fall frost

Nov 13

Growing season

240 days

Hardiness zone

More local growing data for Sebastopol: nearby ZIP 95472 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 Sea Ranch

All California locations ›

Climate data from the nearest NOAA station, Graton, Ca (2.2 mi from Sebastopol). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.