Muir Beach, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Muir Beach, a community in Marin County, California.

Tonight

57°F

Partly Cloudy

Partly cloudy, with a low around 57. West northwest wind 6 to 16 mph, with gusts as high as 20 mph.

7-day forecast for Muir Beach

When	Temp	Forecast	Wind	Precip
Tonight	57°F	Partly Cloudy	6 to 16 mph WNW	0%
Saturday	62°F	Mostly Sunny	2 to 15 mph W	0%
Saturday Night	56°F	Mostly Cloudy	10 to 15 mph W	1%
Sunday	59°F	Mostly Cloudy	12 mph W	1%
Sunday Night	57°F	Mostly Cloudy	7 to 12 mph W	1%
Monday	60°F	Partly Sunny	6 to 10 mph WSW	0%
Monday Night	57°F	Mostly Cloudy	3 to 10 mph WSW	0%
Tuesday	65°F	Mostly Sunny	3 to 10 mph WSW	0%
Tuesday Night	57°F	Partly Cloudy then Patchy Fog	1 to 10 mph WSW	0%
Wednesday	73°F	Patchy Fog then Mostly Sunny	0 to 9 mph WSW	0%
Wednesday Night	59°F	Partly Cloudy	0 to 9 mph W	0%
Thursday	73°F	Mostly Sunny	0 to 9 mph W	0%
Thursday Night	60°F	Mostly Cloudy	3 to 9 mph W	0%
Friday	69°F	Mostly Sunny	3 to 12 mph W	0%

Forecast source: National Weather Service (api.weather.gov) for Muir Beach (37.862, -122.580). Updated through the day.

Growing snapshot for Muir Beach

Growing season

365 days

Hardiness zone

10a

More local growing data for Muir Beach: nearby ZIP 94965 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 Nicasio Novato Petaluma Center Point Reyes Station Ross 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, San Francisco Dwtn, Ca (7.2 mi from Muir Beach). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.