Santa Rosa, CA Weather & Growing Conditions
This Afternoon
61°F
Light Rain
Rain. Mostly cloudy. High near 61, with temperatures falling to around 56 in the afternoon. Southeast wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 61°F | Light Rain | 5 mph SE | 85% |
| Tonight | 45°F | Chance Light Rain then Patchy Fog | 2 to 7 mph ENE | 41% |
| Wednesday | 69°F | Patchy Fog then Sunny | 2 to 6 mph NNW | 1% |
| Wednesday Night | 44°F | Partly Cloudy then Patchy Fog | 1 to 6 mph NW | 0% |
| Thursday | 73°F | Patchy Fog then Sunny | 3 mph NNW | 0% |
| Thursday Night | 46°F | Mostly Clear | 0 to 3 mph NNW | 0% |
| Friday | 75°F | Sunny | 2 mph WNW | 0% |
| Friday Night | 47°F | Mostly Clear | 2 mph NNW | 0% |
| Saturday | 77°F | Sunny | 0 to 3 mph NNE | 0% |
| Saturday Night | 47°F | Mostly Clear | 0 to 3 mph NNW | 0% |
| Sunday | 76°F | Mostly Sunny | 2 mph NNW | 0% |
| Sunday Night | 48°F | Mostly Cloudy | 2 mph NW | 0% |
| Monday | 73°F | Partly Sunny | 3 mph WNW | 3% |
| Monday Night | 47°F | Mostly Cloudy | 3 mph NW | 3% |
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 Nov 4, 2026.