Cotati, CA Weather & Growing Conditions
Overnight
52°F
Areas Of Fog
Areas of fog after 2am. Partly cloudy, with a low around 52. South southwest wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Areas Of Fog | 1 mph SSW | 0% |
| Saturday | 81°F | Areas Of Fog then Mostly Sunny | 0 to 9 mph SSW | 0% |
| Saturday Night | 52°F | Partly Cloudy then Patchy Fog | 1 to 7 mph SSW | 0% |
| Sunday | 76°F | Areas Of Fog then Mostly Cloudy | 1 to 7 mph SSW | 1% |
| Sunday Night | 51°F | Areas Of Fog | 0 to 7 mph SSW | 1% |
| Monday | 78°F | Areas Of Fog then Mostly Sunny | 0 to 8 mph SW | 0% |
| Monday Night | 51°F | Areas Of Fog | 0 to 8 mph SW | 0% |
| Tuesday | 78°F | Areas Of Fog then Mostly Sunny | 0 to 8 mph SSW | 0% |
| Tuesday Night | 51°F | Areas Of Fog | 0 to 8 mph W | 0% |
| Wednesday | 86°F | Areas Of Fog then Mostly Sunny | 0 to 7 mph NNW | 0% |
| Wednesday Night | 54°F | Partly Cloudy | 0 to 7 mph WNW | 0% |
| Thursday | 87°F | Mostly Sunny | 0 to 8 mph W | 0% |
| Thursday Night | 54°F | Partly Cloudy | 0 to 8 mph WSW | 0% |
| Friday | 81°F | Mostly Sunny | 0 to 9 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Cotati, CA
Last spring frost
Feb 28
First fall frost
Nov 25
Growing season
271 days
Hardiness zone
9a
Explore more for Cotati, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Petaluma Ap, Ca (7.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.