Santa Rosa, CA Weather & Growing Conditions
Tonight
53°F
Mostly Clear then Patchy Fog
Patchy fog after 4am. Mostly clear, with a low around 53. South southwest wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Mostly Clear then Patchy Fog | 2 mph SSW | 0% |
| Saturday | 87°F | Patchy Fog then Sunny | 0 to 7 mph WSW | 0% |
| Saturday Night | 53°F | Mostly Cloudy then Patchy Fog | 0 to 5 mph SSW | 0% |
| Sunday | 81°F | Patchy Fog then Partly Sunny | 0 to 6 mph SSW | 0% |
| Sunday Night | 52°F | Areas Of Fog | 0 to 6 mph SW | 0% |
| Monday | 83°F | Areas Of Fog then Mostly Sunny | 0 to 7 mph SW | 0% |
| Monday Night | 52°F | Patchy Fog | 0 to 7 mph W | 0% |
| Tuesday | 85°F | Areas Of Fog then Sunny | 0 to 6 mph W | 0% |
| Tuesday Night | 53°F | Mostly Clear | 0 to 6 mph WNW | 0% |
| Wednesday | 93°F | Sunny | 0 to 6 mph WSW | 0% |
| Wednesday Night | 57°F | Mostly Clear | 0 to 6 mph WNW | 0% |
| Thursday | 93°F | Sunny | 0 to 6 mph SW | 0% |
| Thursday Night | 56°F | Partly Cloudy | 0 to 6 mph W | 0% |
| Friday | 88°F | Mostly Sunny | 0 to 7 mph W | 0% |
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 (2.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.