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
55°F
Chance Light Rain then Mostly Cloudy
A chance of rain before 10pm. Mostly cloudy. Low around 55, with temperatures rising to around 57 overnight. East northeast wind 13 to 16 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Muir Beach
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Chance Light Rain then Mostly Cloudy | 13 to 16 mph ENE | 40% |
| Wednesday | 60°F | Mostly Sunny | 5 to 21 mph N | 2% |
| Wednesday Night | 56°F | Mostly Cloudy | 5 to 20 mph NNW | 2% |
| Thursday | 61°F | Mostly Sunny | 2 to 8 mph N | 0% |
| Thursday Night | 56°F | Mostly Clear | 2 to 8 mph NNW | 0% |
| Friday | 62°F | Mostly Sunny | 5 mph NNW | 0% |
| Friday Night | 57°F | Mostly Clear | 1 to 5 mph NNW | 0% |
| Saturday | 62°F | Sunny | 3 to 8 mph N | 0% |
| Saturday Night | 57°F | Partly Cloudy | 3 to 8 mph NW | 0% |
| Sunday | 62°F | Mostly Sunny | 2 to 6 mph NNW | 0% |
| Sunday Night | 58°F | Mostly Cloudy | 6 mph NW | 0% |
| Monday | 62°F | Partly Sunny | 5 to 9 mph NW | 2% |
| Monday Night | 57°F | Partly Cloudy | 3 to 9 mph NW | 2% |
| Tuesday | 62°F | Mostly Sunny | 6 mph NNW | 7% |
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
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Kentfield
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Lucas Valley-Marinwood
Marin City
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Petaluma Center
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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 Nov 4, 2026.