Fulton, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fulton, a community in Sonoma County, California.
This Afternoon
83°F
Sunny
Sunny. High near 83, with temperatures falling to around 80 in the afternoon. Southwest wind around 8 mph.
7-day forecast for Fulton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 83°F | Sunny | 8 mph SW | 0% |
| Tonight | 53°F | Mostly Clear then Areas Of Fog | 1 to 7 mph SSE | 0% |
| Saturday | 86°F | Areas Of Fog then Sunny | 1 to 7 mph S | 0% |
| Saturday Night | 53°F | Mostly Cloudy then Areas Of Fog | 1 to 5 mph S | 0% |
| Sunday | 80°F | Areas Of Fog then Mostly Cloudy | 1 to 6 mph S | 0% |
| Sunday Night | 52°F | Areas Of Fog | 1 to 6 mph SSW | 0% |
| Monday | 82°F | Areas Of Fog then Mostly Sunny | 1 to 7 mph SSW | 0% |
| Monday Night | 52°F | Areas Of Fog | 0 to 7 mph SW | 0% |
| Tuesday | 84°F | Areas Of Fog then Sunny | 0 to 6 mph SW | 0% |
| Tuesday Night | 54°F | Mostly Clear | 0 to 6 mph SW | 0% |
| Wednesday | 92°F | Patchy Fog then Sunny | 0 to 6 mph SW | 0% |
| Wednesday Night | 56°F | Partly Cloudy | 0 to 6 mph WNW | 0% |
| Thursday | 92°F | Mostly Sunny | 0 to 7 mph SW | 0% |
| Thursday Night | 56°F | Partly Cloudy | 0 to 7 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Fulton (38.494, -122.773). Updated through the day.
Growing snapshot for Fulton
Last spring frost
Mar 2
First fall frost
Nov 20
Growing season
262 days
Hardiness zone
9a
More local growing data for Fulton: nearby ZIP 95439 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Santa Rosa Sonoma Co Ap, Ca (2.1 mi from Fulton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.