Santa Rosa, CA Weather & Growing Conditions
Today
68°F
Patchy Fog then Sunny
Patchy fog between 8am and 10am. Sunny. High near 68, with temperatures falling to around 64 in the afternoon. Northwest wind 1 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 68°F | Patchy Fog then Sunny | 1 to 8 mph NW | 1% |
| Tonight | 41°F | Mostly Cloudy | 2 to 9 mph NW | 1% |
| Thursday | 73°F | Patchy Fog then Sunny | 0 to 5 mph NW | 0% |
| Thursday Night | 41°F | Areas Of Fog | 2 mph N | 0% |
| Friday | 73°F | Patchy Fog then Mostly Sunny | 2 mph WNW | 0% |
| Friday Night | 41°F | Mostly Clear then Patchy Fog | 2 mph N | 0% |
| Saturday | 76°F | Areas Of Fog then Sunny | 0 to 3 mph ENE | 0% |
| Saturday Night | 42°F | Patchy Fog | 0 to 3 mph NW | 0% |
| Sunday | 75°F | Patchy Fog then Mostly Sunny | 2 mph NW | 0% |
| Sunday Night | 44°F | Areas Of Fog | 2 mph NW | 0% |
| Monday | 73°F | Patchy Fog then Partly Sunny | 0 to 3 mph WNW | 0% |
| Monday Night | 42°F | Patchy Fog | 3 mph NW | 1% |
| Tuesday | 73°F | Areas Of Fog then Mostly Sunny | 0 to 3 mph NW | 3% |
| Tuesday Night | 44°F | Areas Of Fog | 0 to 3 mph NW | 14% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Santa Rosa, CA
Last spring frost
Feb 25
First fall frost
Dec 1
Growing season
279 days
Hardiness zone
9a
Explore more for Santa Rosa, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Santa Rosa, Ca (4.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.