Cotati, CA Weather & Growing Conditions
Overnight
51°F
Patchy Fog
Patchy fog. Partly cloudy, with a low around 51. West southwest wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Patchy Fog | 1 mph WSW | 0% |
| Tuesday | 86°F | Haze then Sunny | 0 to 9 mph WSW | 0% |
| Tuesday Night | 51°F | Areas Of Fog | 0 to 6 mph WSW | 0% |
| Wednesday | 84°F | Areas Of Fog then Mostly Sunny | 0 to 8 mph SW | 0% |
| Wednesday Night | 51°F | Areas Of Fog | 0 to 7 mph SW | 0% |
| Thursday | 81°F | Areas Of Fog then Sunny | 0 to 8 mph SW | 0% |
| Thursday Night | 51°F | Partly Cloudy then Patchy Fog | 0 to 8 mph SW | 0% |
| Friday | 88°F | Mostly Sunny | 0 to 8 mph SW | 0% |
| Friday Night | 52°F | Partly Cloudy | 0 to 8 mph WSW | 0% |
| Saturday | 87°F | Sunny | 0 to 8 mph W | 0% |
| Saturday Night | 55°F | Mostly Clear | 1 to 8 mph SW | 0% |
| Sunday | 86°F | Sunny | 1 to 9 mph SW | 0% |
| Sunday Night | 52°F | Mostly Clear then Patchy Fog | 1 to 9 mph SSW | 0% |
| Monday | 80°F | Patchy Fog then Sunny | 1 to 9 mph SSW | 0% |
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 Aug 4, 2026.