Graton, CA Weather & Growing Conditions
Today
89°F
Sunny
Sunny. High near 89, with temperatures falling to around 83 in the afternoon. South southwest wind 0 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Sunny | 0 to 8 mph SSW | 0% |
| Tonight | 51°F | Areas Of Fog | 0 to 5 mph SW | 1% |
| Wednesday | 86°F | Areas Of Fog then Mostly Sunny | 0 to 8 mph SW | 0% |
| Wednesday Night | 50°F | Areas Of Fog | 0 to 6 mph WNW | 0% |
| Thursday | 84°F | Areas Of Fog then Mostly Sunny | 0 to 7 mph WSW | 0% |
| Thursday Night | 51°F | Areas Of Fog | 0 to 7 mph SW | 0% |
| Friday | 93°F | Sunny | 0 to 7 mph WSW | 0% |
| Friday Night | 52°F | Partly Cloudy | 0 to 7 mph WNW | 0% |
| Saturday | 92°F | Sunny | 0 to 7 mph WSW | 0% |
| Saturday Night | 55°F | Mostly Clear | 1 to 7 mph WSW | 0% |
| Sunday | 92°F | Sunny | 1 to 8 mph SW | 0% |
| Sunday Night | 53°F | Mostly Clear then Areas Of Fog | 0 to 8 mph W | 0% |
| Monday | 84°F | Areas Of Fog then Sunny | 0 to 8 mph SSW | 0% |
| Monday Night | 52°F | Partly Cloudy | 0 to 8 mph WNW | 0% |
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 Aug 4, 2026.