Lucas Valley-Marinwood, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lucas Valley-Marinwood, a community in Marin County, California.
Overnight
48°F
Chance Light Rain
A chance of rain before 4am. Mostly clear. Low around 48, with temperatures rising to around 50 overnight. East northeast wind around 7 mph. Chance of precipitation is 30%.
7-day forecast for Lucas Valley-Marinwood
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 48°F | Chance Light Rain | 7 mph ENE | 25% |
| Wednesday | 64°F | Sunny | 2 to 10 mph NNW | 2% |
| Wednesday Night | 48°F | Mostly Cloudy | 5 to 13 mph NW | 2% |
| Thursday | 68°F | Mostly Sunny | 1 to 5 mph NW | 0% |
| Thursday Night | 48°F | Mostly Clear | 3 mph NW | 0% |
| Friday | 69°F | Sunny | 2 mph NNE | 0% |
| Friday Night | 50°F | Mostly Clear | 1 mph N | 0% |
| Saturday | 72°F | Sunny | 0 to 5 mph NE | 0% |
| Saturday Night | 49°F | Mostly Clear | 2 mph NW | 0% |
| Sunday | 73°F | Mostly Sunny | 2 mph NW | 0% |
| Sunday Night | 50°F | Partly Cloudy | 1 mph WNW | 0% |
| Monday | 72°F | Mostly Sunny | 2 mph NW | 2% |
| Monday Night | 50°F | Partly Cloudy | 2 mph WNW | 2% |
| Tuesday | 72°F | Sunny | 2 mph NW | 7% |
Forecast source: National Weather Service (api.weather.gov) for Lucas Valley-Marinwood (38.041, -122.576). Updated through the day.
Growing snapshot for Lucas Valley-Marinwood
Last spring frost
Jan 11
First fall frost
Dec 21
Growing season
349 days
Hardiness zone
9b
More local growing data for Lucas Valley-Marinwood: nearby ZIP 94903 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, San Rafael Civic Ctr, Ca (2 mi from Lucas Valley-Marinwood). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.