Santa Rosa, CA Weather & Growing Conditions
Today
96°F
Sunny
Sunny. High near 96, with temperatures falling to around 92 in the afternoon. West southwest wind 1 to 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 96°F | Sunny | 1 to 6 mph WSW | 0% |
| Tonight | 55°F | Mostly Clear | 5 mph W | 0% |
| Wednesday | 88°F | Sunny | 2 to 6 mph WSW | 0% |
| Wednesday Night | 53°F | Mostly Clear | 5 mph WSW | 0% |
| Thursday | 83°F | Sunny | 2 to 6 mph WSW | 0% |
| Thursday Night | 55°F | Mostly Clear | 5 mph WSW | 0% |
| Friday | 90°F | Sunny | 2 to 6 mph WSW | 0% |
| Friday Night | 58°F | Mostly Clear | 1 to 5 mph WSW | 0% |
| Saturday | 89°F | Sunny | 1 to 6 mph WSW | 0% |
| Saturday Night | 61°F | Mostly Clear | 1 to 5 mph SW | 0% |
| Sunday | 87°F | Sunny | 1 to 6 mph SSW | 0% |
| Sunday Night | 56°F | Mostly Clear | 1 to 6 mph SW | 0% |
| Monday | 80°F | Sunny | 1 to 6 mph SSW | 0% |
| Monday Night | 53°F | Mostly Clear | 1 to 6 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 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 Aug 4, 2026.