Larkspur, CA Weather & Growing Conditions
Tonight
49°F
Chance Light Rain then Mostly Cloudy
A chance of rain before 10pm. Mostly cloudy. Low around 49, with temperatures rising to around 51 overnight. East northeast wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Chance Light Rain then Mostly Cloudy | 5 mph ENE | 43% |
| Wednesday | 68°F | Sunny | 2 to 6 mph NNW | 2% |
| Wednesday Night | 50°F | Mostly Cloudy | 1 to 5 mph NW | 2% |
| Thursday | 71°F | Mostly Sunny | 1 mph N | 0% |
| Thursday Night | 49°F | Mostly Clear | 0 mph | 0% |
| Friday | 73°F | Sunny | 1 mph NNE | 0% |
| Friday Night | 50°F | Mostly Clear | 0 mph | 0% |
| Saturday | 76°F | Sunny | 0 to 5 mph NNE | 0% |
| Saturday Night | 50°F | Mostly Clear | 0 mph | 0% |
| Sunday | 75°F | Mostly Sunny | 2 mph N | 0% |
| Sunday Night | 52°F | Partly Cloudy | 0 mph | 0% |
| Monday | 73°F | Mostly Sunny | 2 mph NNW | 2% |
| Monday Night | 51°F | Partly Cloudy | 0 mph | 2% |
| Tuesday | 72°F | Sunny | 1 mph N | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Larkspur, CA
Last spring frost
Jan 16
First fall frost
Dec 18
Growing season
334 days
Hardiness zone
10a
Explore more for Larkspur, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Kentfield, Ca (1.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.