Windsor, CA Weather & Growing Conditions
Overnight
52°F
Areas Of Fog
Areas of fog. Partly cloudy, with a low around 52. South southeast wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Areas Of Fog | 1 mph SSE | 0% |
| Saturday | 87°F | Areas Of Fog then Sunny | 1 to 7 mph S | 0% |
| Saturday Night | 51°F | Mostly Cloudy then Areas Of Fog | 1 to 5 mph SSE | 0% |
| Sunday | 81°F | Areas Of Fog then Mostly Cloudy | 1 to 5 mph S | 0% |
| Sunday Night | 50°F | Areas Of Fog | 1 to 5 mph SSW | 0% |
| Monday | 83°F | Areas Of Fog then Mostly Sunny | 1 to 7 mph SSW | 0% |
| Monday Night | 50°F | Areas Of Fog | 1 to 7 mph SW | 0% |
| Tuesday | 84°F | Areas Of Fog then Mostly Sunny | 1 to 6 mph S | 0% |
| Tuesday Night | 50°F | Areas Of Fog | 0 to 6 mph WSW | 0% |
| Wednesday | 91°F | Areas Of Fog then Mostly Sunny | 0 to 6 mph SW | 0% |
| Wednesday Night | 54°F | Partly Cloudy | 0 to 6 mph WNW | 0% |
| Thursday | 92°F | Mostly Sunny | 0 to 6 mph SW | 0% |
| Thursday Night | 54°F | Partly Cloudy | 1 to 6 mph W | 0% |
| Friday | 86°F | Mostly Sunny | 1 to 7 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Windsor, CA
Last spring frost
Mar 2
First fall frost
Nov 20
Growing season
262 days
Hardiness zone
9a
Explore more for Windsor, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Santa Rosa Sonoma Co Ap, Ca (1.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.