Cotati, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cotati, a city in Sonoma County, California.
Tonight
52°F
Partly Cloudy then Areas Of Fog
Areas of fog after midnight. Partly cloudy, with a low around 52. South southwest wind around 1 mph.
7-day forecast for Cotati
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Partly Cloudy then Areas Of Fog | 1 mph SSW | 0% |
| Saturday | 82°F | Areas Of Fog then Mostly Sunny | 0 to 7 mph SW | 0% |
| Saturday Night | 53°F | Mostly Cloudy then Areas Of Fog | 0 to 5 mph SSW | 0% |
| Sunday | 77°F | Areas Of Fog then Partly Sunny | 0 to 6 mph SSW | 0% |
| Sunday Night | 52°F | Areas Of Fog | 0 to 6 mph SW | 0% |
| Monday | 78°F | Areas Of Fog then Mostly Sunny | 0 to 7 mph W | 0% |
| Monday Night | 52°F | Areas Of Fog | 0 to 7 mph SW | 0% |
| Tuesday | 81°F | Areas Of Fog then Mostly Sunny | 0 to 6 mph SSW | 0% |
| Tuesday Night | 53°F | Partly Cloudy then Patchy Fog | 0 to 6 mph WSW | 0% |
| Wednesday | 89°F | Areas Of Fog then Mostly Sunny | 0 to 6 mph W | 0% |
| Wednesday Night | 56°F | Partly Cloudy | 0 to 6 mph WSW | 0% |
| Thursday | 89°F | Mostly Sunny | 0 to 7 mph SW | 0% |
| Thursday Night | 56°F | Partly Cloudy | 0 to 7 mph SSW | 0% |
| Friday | 84°F | Mostly Sunny | 0 to 7 mph WSW | 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
9a
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
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 Sep 19, 2026.