Ross, CA Weather & Growing Conditions
Tonight
49°F
Chance Light Rain then Partly Cloudy
A chance of rain before 10pm. Partly cloudy, with a low around 49. East wind around 6 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Chance Light Rain then Partly Cloudy | 6 mph E | 44% |
| Wednesday | 66°F | Sunny | 2 to 8 mph NNW | 2% |
| Wednesday Night | 49°F | Mostly Cloudy | 2 to 8 mph WNW | 2% |
| Thursday | 70°F | Mostly Sunny | 2 mph NNW | 0% |
| Thursday Night | 48°F | Mostly Clear | 2 mph NW | 0% |
| Friday | 72°F | Sunny | 1 mph NNE | 0% |
| Friday Night | 50°F | Mostly Clear | 0 mph | 0% |
| Saturday | 74°F | Sunny | 0 to 5 mph NNE | 0% |
| Saturday Night | 50°F | Mostly Clear | 1 mph NNW | 0% |
| Sunday | 74°F | Mostly Sunny | 2 mph NNW | 0% |
| Sunday Night | 52°F | Partly Cloudy | 1 mph NNW | 0% |
| Monday | 71°F | Mostly Sunny | 2 mph NW | 2% |
| Monday Night | 51°F | Partly Cloudy | 1 mph NW | 2% |
| Tuesday | 71°F | Sunny | 2 mph NNW | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Ross, CA
Last spring frost
Jan 16
First fall frost
Dec 18
Growing season
334 days
Hardiness zone
9b
Explore more for Ross, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Kentfield, Ca (1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.