Graton, CA Weather & Growing Conditions
Today
85°F
Areas Of Fog then Sunny
Areas of fog before 9am. Sunny. High near 85, with temperatures falling to around 81 in the afternoon. South southwest wind 0 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Areas Of Fog then Sunny | 0 to 8 mph SSW | 0% |
| Tonight | 52°F | Partly Cloudy then Areas Of Fog | 0 to 5 mph W | 0% |
| Sunday | 79°F | Areas Of Fog then Mostly Cloudy | 0 to 6 mph SSW | 0% |
| Sunday Night | 52°F | Areas Of Fog | 0 to 5 mph SSW | 0% |
| Monday | 80°F | Areas Of Fog then Mostly Sunny | 0 to 7 mph SW | 0% |
| Monday Night | 51°F | Areas Of Fog | 0 to 7 mph SW | 0% |
| Tuesday | 81°F | Areas Of Fog then Mostly Sunny | 0 to 6 mph WSW | 0% |
| Tuesday Night | 51°F | Areas Of Fog | 0 to 6 mph WNW | 0% |
| Wednesday | 89°F | Areas Of Fog then Mostly Sunny | 0 to 6 mph W | 0% |
| Wednesday Night | 55°F | Partly Cloudy | 0 to 6 mph WNW | 0% |
| Thursday | 90°F | Mostly Sunny | 0 to 6 mph W | 0% |
| Thursday Night | 54°F | Partly Cloudy | 0 to 6 mph WNW | 0% |
| Friday | 84°F | Mostly Sunny | 0 to 7 mph W | 1% |
| Friday Night | 52°F | Partly Cloudy | 0 to 7 mph W | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Graton, CA
Last spring frost
Mar 20
First fall frost
Nov 13
Growing season
240 days
Hardiness zone
9a
Explore more for Graton, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Graton, Ca (0.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.