Sebastopol, CA Weather & Growing Conditions

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

Overnight

50°F

Haze

Haze and areas of fog. Partly cloudy, with a low around 50. Wind around 0 mph.

7-day forecast for Sebastopol

When	Temp	Forecast	Wind	Precip
Overnight	50°F	Haze	0 mph	0%
Tuesday	87°F	Haze then Sunny	0 to 9 mph SW	0%
Tuesday Night	50°F	Areas Of Fog	0 to 5 mph WSW	1%
Wednesday	84°F	Areas Of Fog then Mostly Sunny	0 to 9 mph SW	0%
Wednesday Night	50°F	Areas Of Fog	0 to 7 mph WNW	0%
Thursday	82°F	Areas Of Fog then Mostly Sunny	0 to 8 mph WSW	0%
Thursday Night	50°F	Areas Of Fog	0 to 8 mph WSW	0%
Friday	91°F	Patchy Fog then Sunny	0 to 8 mph WSW	0%
Friday Night	52°F	Partly Cloudy	0 to 8 mph WSW	0%
Saturday	89°F	Sunny	0 to 8 mph WSW	0%
Saturday Night	54°F	Mostly Clear	1 to 8 mph SW	0%
Sunday	90°F	Sunny	1 to 9 mph SW	0%
Sunday Night	52°F	Mostly Clear then Areas Of Fog	1 to 9 mph WSW	0%
Monday	83°F	Areas Of Fog then Sunny	1 to 9 mph SW	0%

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 Aug 4, 2026.