Santa Rosa, CA Weather & Growing Conditions
Today
62°F
Sunny
Sunny. High near 62, with temperatures falling to around 58 in the afternoon. Northwest wind 3 to 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 62°F | Sunny | 3 to 7 mph NW | 1% |
| Tonight | 49°F | Mostly Cloudy | 5 mph NNW | 1% |
| Thursday | 67°F | Sunny | 1 to 5 mph NW | 0% |
| Thursday Night | 52°F | Mostly Clear | 3 mph N | 0% |
| Friday | 68°F | Sunny | 3 mph NNW | 0% |
| Friday Night | 53°F | Mostly Clear | 2 mph NNE | 0% |
| Saturday | 70°F | Sunny | 5 mph SE | 0% |
| Saturday Night | 54°F | Mostly Clear | 0 to 3 mph NNW | 0% |
| Sunday | 69°F | Mostly Sunny | 3 mph NW | 0% |
| Sunday Night | 55°F | Partly Cloudy | 2 mph NW | 0% |
| Monday | 67°F | Mostly Sunny | 3 mph WNW | 0% |
| Monday Night | 53°F | Partly Cloudy | 2 mph NW | 1% |
| Tuesday | 67°F | Sunny | 3 mph NNW | 3% |
| Tuesday Night | 55°F | Partly Cloudy | 2 mph NNW | 14% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Santa Rosa, CA
Last spring frost
Feb 3
First fall frost
Dec 4
Growing season
306 days
Hardiness zone
9b
Explore more for Santa Rosa, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Saint Helena, Ca (6.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.