San Rafael, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for San Rafael, a city in Marin County, California.

This Afternoon

82°F

Sunny

Sunny. High near 82, with temperatures falling to around 79 in the afternoon. West wind around 6 mph.

7-day forecast for San Rafael

When	Temp	Forecast	Wind	Precip
This Afternoon	82°F	Sunny	6 mph W	0%
Tonight	56°F	Mostly Clear	0 to 5 mph WSW	0%
Saturday	83°F	Sunny	0 to 6 mph SSW	0%
Saturday Night	56°F	Partly Cloudy	2 mph WSW	0%
Sunday	75°F	Partly Sunny	1 to 6 mph SW	1%
Sunday Night	56°F	Mostly Cloudy	1 to 5 mph SW	1%
Monday	75°F	Mostly Sunny	1 to 7 mph SW	0%
Monday Night	57°F	Partly Cloudy	0 to 7 mph SW	0%
Tuesday	79°F	Sunny	0 to 5 mph SW	0%
Tuesday Night	57°F	Mostly Clear	0 to 5 mph SW	0%
Wednesday	89°F	Sunny	2 mph WSW	0%
Wednesday Night	59°F	Mostly Clear	2 mph NW	0%
Thursday	90°F	Sunny	0 to 3 mph SW	0%
Thursday Night	59°F	Partly Cloudy	0 to 3 mph SSW	0%

Forecast source: National Weather Service (api.weather.gov) for San Rafael (37.981, -122.507). Updated through the day.

Growing snapshot for San Rafael

Last spring frost

Jan 11

First fall frost

Dec 21

Growing season

349 days

Hardiness zone

10a

More local growing data for San Rafael: nearby ZIP 94901 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 Ross San Anselmo San Francisco San Geronimo Santa Venetia Sausalito Sleepy Hollow Stinson Beach Strawberry Tamalpais-Homestead Valley Tiburon

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Climate data from the nearest NOAA station, San Rafael Civic Ctr, Ca (2.3 mi from San Rafael). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.