Windsor, CA Weather & Growing Conditions

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

This Afternoon

84°F

Sunny

Sunny. High near 84, with temperatures falling to around 82 in the afternoon. Southwest wind around 7 mph.

7-day forecast for Windsor

When	Temp	Forecast	Wind	Precip
This Afternoon	84°F	Sunny	7 mph SW	0%
Tonight	53°F	Mostly Clear then Areas Of Fog	1 to 6 mph S	0%
Saturday	88°F	Areas Of Fog then Sunny	1 to 6 mph S	0%
Saturday Night	53°F	Mostly Cloudy then Areas Of Fog	0 to 5 mph S	0%
Sunday	82°F	Areas Of Fog then Mostly Cloudy	0 to 6 mph SSW	0%
Sunday Night	52°F	Areas Of Fog	0 to 6 mph SW	0%
Monday	83°F	Areas Of Fog then Mostly Sunny	0 to 7 mph SSW	0%
Monday Night	51°F	Areas Of Fog	1 to 7 mph SW	0%
Tuesday	86°F	Areas Of Fog then Sunny	1 to 7 mph SSW	0%
Tuesday Night	53°F	Mostly Clear	0 to 7 mph WSW	0%
Wednesday	92°F	Patchy Fog then Sunny	0 to 6 mph S	0%
Wednesday Night	56°F	Partly Cloudy	0 to 6 mph WSW	0%
Thursday	93°F	Mostly Sunny	0 to 7 mph SSW	0%
Thursday Night	56°F	Partly Cloudy	0 to 7 mph W	0%

Forecast source: National Weather Service (api.weather.gov) for Windsor (38.542, -122.809). Updated through the day.

Growing snapshot for Windsor

Last spring frost

Mar 2

First fall frost

Nov 20

Growing season

262 days

Hardiness zone

More local growing data for Windsor: nearby ZIP 95492 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, Santa Rosa Sonoma Co Ap, Ca (1.8 mi from Windsor). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.