Ross, CA Weather & Growing Conditions

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

Overnight

54°F

Mostly Clear

Mostly clear. Low around 54, with temperatures rising to around 56 overnight. South southwest wind around 3 mph.

7-day forecast for Ross

When	Temp	Forecast	Wind	Precip
Overnight	54°F	Mostly Clear	3 mph SSW	0%
Tuesday	90°F	Haze then Sunny	2 to 7 mph SSW	1%
Tuesday Night	55°F	Mostly Clear	2 to 6 mph WSW	2%
Wednesday	83°F	Sunny	2 to 6 mph SW	2%
Wednesday Night	55°F	Mostly Clear	1 to 6 mph WSW	0%
Thursday	81°F	Sunny	1 to 6 mph WSW	0%
Thursday Night	56°F	Mostly Clear	1 to 6 mph WSW	0%
Friday	87°F	Sunny	0 to 6 mph SW	0%
Friday Night	57°F	Mostly Clear	1 to 6 mph WSW	0%
Saturday	87°F	Sunny	1 to 6 mph SW	0%
Saturday Night	60°F	Mostly Clear	2 to 6 mph WSW	0%
Sunday	85°F	Sunny	2 to 8 mph WSW	0%
Sunday Night	57°F	Mostly Clear	3 to 8 mph WSW	0%
Monday	78°F	Sunny	3 to 8 mph SW	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

All California locations ›

Climate data from the nearest NOAA station, Kentfield, Ca (1 mi from Ross). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.