Lagunitas-Forest Knolls, CA Weather & Growing Conditions
Overnight
48°F
Chance Light Rain
A chance of rain before 4am. Partly cloudy, with a low around 48. East wind around 5 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 48°F | Chance Light Rain | 5 mph E | 25% |
| Wednesday | 65°F | Sunny | 2 to 9 mph NNE | 2% |
| Wednesday Night | 49°F | Mostly Cloudy | 3 to 8 mph NW | 2% |
| Thursday | 70°F | Mostly Sunny | 5 mph NW | 0% |
| Thursday Night | 47°F | Mostly Clear | 1 to 5 mph NW | 0% |
| Friday | 71°F | Sunny | 1 to 5 mph NNW | 0% |
| Friday Night | 48°F | Mostly Clear | 0 to 5 mph NNW | 0% |
| Saturday | 73°F | Sunny | 3 mph NE | 0% |
| Saturday Night | 48°F | Mostly Clear | 3 mph NW | 0% |
| Sunday | 70°F | Mostly Sunny | 5 mph NW | 0% |
| Sunday Night | 51°F | Partly Cloudy | 1 to 5 mph NW | 0% |
| Monday | 69°F | Mostly Sunny | 2 to 6 mph NW | 2% |
| Monday Night | 50°F | Partly Cloudy | 2 to 6 mph NW | 2% |
| Tuesday | 69°F | Sunny | 5 mph NW | 8% |
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
10a
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 (8.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.