Santa Rosa, CA Weather & Growing Conditions
This Afternoon
80°F
Sunny
Sunny. High near 80, with temperatures falling to around 76 in the afternoon. Southwest wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 80°F | Sunny | 8 mph SW | 0% |
| Tonight | 51°F | Partly Cloudy then Patchy Fog | 1 to 7 mph S | 0% |
| Saturday | 84°F | Areas Of Fog then Mostly Sunny | 1 to 7 mph SSW | 0% |
| Saturday Night | 52°F | Patchy Fog | 1 to 6 mph S | 0% |
| Sunday | 78°F | Patchy Fog then Mostly Cloudy | 1 to 6 mph S | 0% |
| Sunday Night | 51°F | Mostly Cloudy then Areas Of Fog | 1 to 6 mph SSW | 0% |
| Monday | 79°F | Areas Of Fog then Mostly Sunny | 1 to 7 mph SW | 0% |
| Monday Night | 51°F | Areas Of Fog | 0 to 7 mph SW | 0% |
| Tuesday | 82°F | Areas Of Fog then Mostly Sunny | 0 to 7 mph WSW | 0% |
| Tuesday Night | 52°F | Areas Of Fog | 0 to 7 mph SW | 0% |
| Wednesday | 90°F | Areas Of Fog then Mostly Sunny | 0 to 7 mph W | 0% |
| Wednesday Night | 54°F | Partly Cloudy | 0 to 7 mph W | 0% |
| Thursday | 90°F | Mostly Sunny | 0 to 7 mph WSW | 0% |
| Thursday Night | 54°F | Partly Cloudy | 0 to 7 mph WSW | 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 (4.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.