Santa Rosa, CA Weather & Growing Conditions
Today
69°F
Patchy Fog then Sunny
Patchy fog before 10am. Sunny. High near 69, with temperatures falling to around 64 in the afternoon. West northwest wind 1 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 69°F | Patchy Fog then Sunny | 1 to 8 mph WNW | 1% |
| Tonight | 41°F | Mostly Cloudy | 2 to 9 mph NW | 1% |
| Thursday | 73°F | Patchy Fog then Sunny | 1 to 5 mph WNW | 0% |
| Thursday Night | 41°F | Areas Of Fog | 2 mph NW | 0% |
| Friday | 74°F | Patchy Fog then Mostly Sunny | 2 mph NW | 0% |
| Friday Night | 41°F | Mostly Clear then Patchy Fog | 2 mph NNW | 0% |
| Saturday | 77°F | Patchy Fog then Sunny | 0 to 3 mph S | 0% |
| Saturday Night | 42°F | Patchy Fog | 0 to 3 mph NW | 0% |
| Sunday | 76°F | Patchy Fog then Mostly Sunny | 2 mph NW | 0% |
| Sunday Night | 43°F | Areas Of Fog | 2 mph NW | 0% |
| Monday | 74°F | Patchy Fog then Partly Sunny | 3 mph WNW | 0% |
| Monday Night | 42°F | Areas Of Fog | 0 to 3 mph NW | 1% |
| Tuesday | 74°F | Areas Of Fog then Mostly Sunny | 0 to 3 mph NW | 4% |
| Tuesday Night | 44°F | Areas Of Fog | 0 to 3 mph NNW | 15% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Santa Rosa, CA
Last spring frost
Mar 2
First fall frost
Nov 20
Growing season
262 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 Sonoma Co Ap, Ca (3.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.