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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

WhenTempForecastWindPrecip
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
9a

More local growing data for Sebastopol: nearby ZIP 95472 weather · frost dates · planting calendar · California frost dates

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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.