Lagunitas-Forest Knolls, CA Weather & Growing Conditions
This Afternoon
64°F
Mostly Sunny
Mostly sunny. High near 64, with temperatures falling to around 60 in the afternoon. Northwest wind around 10 mph, with gusts as high as 22 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 64°F | Mostly Sunny | 10 mph NW | 1% |
| Tonight | 49°F | Mostly Cloudy | 3 to 10 mph NW | 1% |
| Thursday | 69°F | Sunny | 2 to 7 mph NW | 0% |
| Thursday Night | 48°F | Mostly Clear | 1 to 5 mph NW | 0% |
| Friday | 69°F | Sunny | 1 to 6 mph NNW | 0% |
| Friday Night | 49°F | Mostly Clear | 0 to 6 mph NNW | 0% |
| Saturday | 73°F | Sunny | 1 to 5 mph NE | 0% |
| Saturday Night | 48°F | Mostly Clear | 5 mph NW | 0% |
| Sunday | 71°F | Mostly Sunny | 2 to 6 mph NNW | 0% |
| Sunday Night | 50°F | Partly Cloudy | 1 to 6 mph NW | 0% |
| Monday | 69°F | Mostly Sunny | 2 to 7 mph NW | 0% |
| Monday Night | 50°F | Partly Cloudy | 1 to 7 mph NW | 1% |
| Tuesday | 69°F | Mostly Sunny | 1 to 6 mph NW | 3% |
| Tuesday Night | 53°F | Partly Cloudy | 0 to 6 mph W | 13% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lagunitas-Forest Knolls, CA
Last spring frost
Jan 11
First fall frost
Dec 21
Growing season
349 days
Hardiness zone
9b
Explore more for Lagunitas-Forest Knolls, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, San Rafael Civic Ctr, Ca (10.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.