Cotati, CA Weather & Growing Conditions
This Afternoon
62°F
Light Rain
Rain. Mostly cloudy. High near 62, with temperatures falling to around 56 in the afternoon. South southeast wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 62°F | Light Rain | 7 mph SSE | 93% |
| Tonight | 43°F | Chance Light Rain then Patchy Fog | 2 to 7 mph E | 38% |
| Wednesday | 68°F | Patchy Fog then Mostly Sunny | 1 to 9 mph NW | 1% |
| Wednesday Night | 43°F | Partly Cloudy then Patchy Fog | 2 to 8 mph NW | 0% |
| Thursday | 72°F | Patchy Fog then Sunny | 1 to 6 mph NNW | 0% |
| Thursday Night | 42°F | Patchy Fog | 0 to 6 mph NW | 0% |
| Friday | 73°F | Patchy Fog then Sunny | 0 to 5 mph WNW | 0% |
| Friday Night | 44°F | Mostly Clear | 0 to 5 mph N | 0% |
| Saturday | 75°F | Patchy Fog then Sunny | 0 to 5 mph E | 0% |
| Saturday Night | 44°F | Partly Cloudy then Patchy Fog | 1 to 5 mph WNW | 0% |
| Sunday | 74°F | Patchy Fog then Mostly Sunny | 0 to 5 mph NW | 0% |
| Sunday Night | 46°F | Patchy Fog | 1 to 5 mph WNW | 0% |
| Monday | 72°F | Areas Of Fog then Partly Sunny | 1 to 6 mph WNW | 3% |
| Monday Night | 44°F | Areas Of Fog | 0 to 6 mph WNW | 3% |
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 Nov 4, 2026.