Sonoma State University, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Sonoma State University, a community in Sonoma County, California.
Today
90°F
Patchy Fog then Sunny
Patchy fog between 8am and 9am. Sunny. High near 90, with temperatures falling to around 83 in the afternoon. West southwest wind 0 to 7 mph.
7-day forecast for Sonoma State University
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Patchy Fog then Sunny | 0 to 7 mph WSW | 0% |
| Tonight | 51°F | Areas Of Fog | 0 to 5 mph W | 0% |
| Wednesday | 86°F | Areas Of Fog then Mostly Sunny | 0 to 7 mph WSW | 0% |
| Wednesday Night | 51°F | Areas Of Fog | 0 to 5 mph NW | 0% |
| Thursday | 83°F | Areas Of Fog then Mostly Sunny | 0 to 6 mph W | 0% |
| Thursday Night | 51°F | Patchy Fog | 0 to 6 mph WSW | 0% |
| Friday | 89°F | Patchy Fog then Mostly Sunny | 0 to 7 mph W | 0% |
| Friday Night | 53°F | Partly Cloudy | 0 to 7 mph W | 0% |
| Saturday | 89°F | Sunny | 0 to 7 mph WSW | 0% |
| Saturday Night | 55°F | Mostly Clear | 0 to 7 mph SW | 0% |
| Sunday | 87°F | Patchy Fog then Sunny | 0 to 7 mph SW | 0% |
| Sunday Night | 53°F | Mostly Clear then Areas Of Fog | 0 to 7 mph SW | 0% |
| Monday | 81°F | Areas Of Fog then Sunny | 0 to 7 mph SSW | 0% |
| Monday Night | 51°F | Partly Cloudy | 0 to 7 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Sonoma State University (38.341, -122.673). Updated through the day.
Growing snapshot for Sonoma State University
Last spring frost
Feb 28
First fall frost
Nov 25
Growing season
271 days
Hardiness zone
9a
More local growing data for Sonoma State University: nearby ZIP 94928 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Petaluma Ap, Ca (7.7 mi from Sonoma State University). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.