Cotati, CA Weather & Growing Conditions

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

Overnight

52°F

Patchy Fog

Patchy fog after 5am. Partly cloudy, with a low around 52. Wind around 0 mph.

7-day forecast for Cotati

When	Temp	Forecast	Wind	Precip
Overnight	52°F	Patchy Fog	0 mph	0%
Tuesday	88°F	Patchy Fog then Sunny	0 to 8 mph WSW	0%
Tuesday Night	51°F	Areas Of Fog	0 to 5 mph W	0%
Wednesday	85°F	Areas Of Fog then Mostly Sunny	0 to 7 mph W	0%
Wednesday Night	51°F	Areas Of Fog	0 to 6 mph WSW	0%
Thursday	82°F	Areas Of Fog then Mostly Sunny	0 to 7 mph W	0%
Thursday Night	51°F	Patchy Fog	0 to 7 mph NW	0%
Friday	89°F	Patchy Fog then Mostly Sunny	0 to 7 mph W	0%
Friday Night	53°F	Partly Cloudy	0 to 7 mph SW	0%
Saturday	88°F	Sunny	0 to 7 mph WSW	0%
Saturday Night	55°F	Mostly Clear	0 to 7 mph SW	0%
Sunday	87°F	Patchy Fog then Sunny	0 to 7 mph SW	0%
Sunday Night	53°F	Mostly Clear then Areas Of Fog	0 to 7 mph SW	0%
Monday	80°F	Areas Of Fog then Sunny	0 to 8 mph SSW	0%

Forecast source: National Weather Service (api.weather.gov) for Cotati (38.328, -122.710). Updated through the day.

Growing snapshot for Cotati

Last spring frost

Feb 28

First fall frost

Nov 25

Growing season

271 days

Hardiness zone

More local growing data for Cotati: nearby ZIP 94931 weather · frost dates · planting calendar · California frost dates

Nearby towns & communities

Bloomfield Bodega Bodega Bay Boyes Hot Springs Calistoga Carmet Cazadero Cloverdale 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 Sebastopol

All California locations ›

Climate data from the nearest NOAA station, Petaluma Ap, Ca (7.5 mi from Cotati). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.