Muir Beach, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Muir Beach, a community in Marin County, California.
Today
61°F
Partly Sunny
Partly sunny, with a high near 61. Southwest wind around 9 mph.
7-day forecast for Muir Beach
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 61°F | Partly Sunny | 9 mph SW | 2% |
| Tonight | 55°F | Mostly Cloudy | 8 mph SW | 2% |
| Wednesday | 60°F | Partly Sunny | 8 mph SW | 3% |
| Wednesday Night | 55°F | Mostly Cloudy | 2 to 8 mph WSW | 0% |
| Thursday | 60°F | Partly Sunny | 2 to 9 mph WSW | 0% |
| Thursday Night | 55°F | Mostly Cloudy | 5 to 9 mph W | 0% |
| Friday | 67°F | Mostly Sunny | 5 to 12 mph W | 0% |
| Friday Night | 57°F | Partly Cloudy | 3 to 12 mph WSW | 0% |
| Saturday | 70°F | Mostly Sunny | 3 to 10 mph WSW | 0% |
| Saturday Night | 58°F | Partly Cloudy | 7 to 10 mph W | 0% |
| Sunday | 68°F | Sunny | 7 to 14 mph WSW | 0% |
| Sunday Night | 56°F | Partly Cloudy | 9 to 14 mph WSW | 0% |
| Monday | 64°F | Mostly Sunny | 9 to 13 mph SW | 0% |
| Monday Night | 56°F | Partly Cloudy | 7 to 12 mph SW | 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
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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 Aug 4, 2026.