Ross, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Ross, a town in Marin County, California.

This Afternoon

79°F

Sunny

Sunny. High near 79, with temperatures falling to around 75 in the afternoon. West northwest wind 2 to 8 mph.

7-day forecast for Ross

When	Temp	Forecast	Wind	Precip
This Afternoon	79°F	Sunny	2 to 8 mph WNW	0%
Tonight	54°F	Mostly Clear	1 to 9 mph W	0%
Saturday	81°F	Sunny	0 to 7 mph SSW	0%
Saturday Night	55°F	Partly Cloudy	3 to 7 mph W	0%
Sunday	73°F	Partly Sunny	2 to 6 mph W	0%
Sunday Night	55°F	Mostly Cloudy	2 to 6 mph WSW	1%
Monday	73°F	Mostly Sunny	2 to 7 mph WSW	0%
Monday Night	56°F	Partly Cloudy	1 to 7 mph WSW	0%
Tuesday	79°F	Sunny	1 to 6 mph SW	0%
Tuesday Night	55°F	Mostly Clear	0 to 6 mph W	0%
Wednesday	88°F	Sunny	0 to 5 mph NW	0%
Wednesday Night	60°F	Mostly Clear	0 to 5 mph WNW	0%
Thursday	88°F	Sunny	0 to 5 mph WSW	0%
Thursday Night	60°F	Partly Cloudy	1 to 5 mph W	0%

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

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

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Climate data from the nearest NOAA station, Kentfield, Ca (1 mi from Ross). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.