Ross, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ross, a town in Marin County, California.
Tonight
49°F
Chance Light Rain then Partly Cloudy
A chance of rain before 10pm. Partly cloudy, with a low around 49. East wind 5 to 9 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Ross
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Chance Light Rain then Partly Cloudy | 5 to 9 mph E | 29% |
| Wednesday | 65°F | Sunny | 2 to 9 mph NW | 2% |
| Wednesday Night | 49°F | Mostly Cloudy | 3 to 10 mph WNW | 2% |
| Thursday | 69°F | Mostly Sunny | 3 mph NW | 0% |
| Thursday Night | 48°F | Mostly Clear | 1 to 5 mph NNW | 0% |
| Friday | 70°F | Sunny | 1 mph N | 0% |
| Friday Night | 50°F | Mostly Clear | 1 mph NNW | 0% |
| Saturday | 73°F | Sunny | 0 to 3 mph NNE | 0% |
| Saturday Night | 50°F | Mostly Clear | 0 to 3 mph NNW | 0% |
| Sunday | 72°F | Mostly Sunny | 2 mph NNW | 0% |
| Sunday Night | 51°F | Partly Cloudy | 2 mph NW | 0% |
| Monday | 70°F | Mostly Sunny | 2 mph NW | 2% |
| Monday Night | 50°F | Partly Cloudy | 3 mph NW | 2% |
| Tuesday | 70°F | Sunny | 1 mph NW | 7% |
Forecast source: National Weather Service (api.weather.gov) for Ross (37.964, -122.562). Updated through the day.
Growing snapshot for Ross
Last spring frost
Jan 16
First fall frost
Dec 18
Growing season
334 days
Hardiness zone
9b
More local growing data for Ross: nearby ZIP 94957 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Alto
Belvedere
Black Point-Green Point
Bolinas
Corte Madera
Dillon Beach
Fairfax
Inverness
Kentfield
Lagunitas-Forest Knolls
Larkspur
Lucas Valley-Marinwood
Marin City
Mill Valley
Muir Beach
Nicasio
Novato
Petaluma Center
Point Reyes Station
San Anselmo
San Francisco
San Geronimo
San Rafael
Santa Venetia
Sausalito
Sleepy Hollow
Stinson Beach
Strawberry
Tamalpais-Homestead Valley
Tiburon
Climate data from the nearest NOAA station, Kentfield, Ca (1 mi from Ross). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.