Lagunitas-Forest Knolls, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lagunitas-Forest Knolls, a community in Marin County, California.
Today
77°F
Patchy Fog then Sunny
Patchy fog before 9am. Sunny. High near 77, with temperatures falling to around 71 in the afternoon. West northwest wind 2 to 9 mph, with gusts as high as 18 mph.
7-day forecast for Lagunitas-Forest Knolls
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Patchy Fog then Sunny | 2 to 9 mph WNW | 0% |
| Tonight | 53°F | Mostly Cloudy | 5 to 8 mph WNW | 1% |
| Sunday | 70°F | Mostly Cloudy | 3 to 8 mph W | 1% |
| Sunday Night | 53°F | Mostly Cloudy then Patchy Fog | 2 to 7 mph W | 1% |
| Monday | 70°F | Patchy Fog then Mostly Sunny | 2 to 7 mph W | 0% |
| Monday Night | 54°F | Patchy Fog | 1 to 7 mph WSW | 0% |
| Tuesday | 73°F | Patchy Fog then Mostly Sunny | 1 to 7 mph WSW | 0% |
| Tuesday Night | 53°F | Areas Of Fog | 1 to 7 mph WNW | 0% |
| Wednesday | 82°F | Areas Of Fog then Sunny | 1 to 7 mph WNW | 0% |
| Wednesday Night | 57°F | Partly Cloudy | 1 to 7 mph NW | 0% |
| Thursday | 83°F | Sunny | 1 to 7 mph WNW | 0% |
| Thursday Night | 56°F | Partly Cloudy | 2 to 7 mph WNW | 0% |
| Friday | 76°F | Mostly Sunny | 3 to 8 mph W | 0% |
| Friday Night | 55°F | Partly Cloudy | 3 to 8 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Lagunitas-Forest Knolls (38.018, -122.691). Updated through the day.
Growing snapshot for Lagunitas-Forest Knolls
Last spring frost
Jan 11
First fall frost
Dec 21
Growing season
349 days
Hardiness zone
10a
More local growing data for Lagunitas-Forest Knolls: nearby ZIP 94933 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Alto
Belvedere
Black Point-Green Point
Bolinas
Corte Madera
Dillon Beach
Fairfax
Inverness
Kentfield
Larkspur
Lucas Valley-Marinwood
Marin City
Mill Valley
Muir Beach
Nicasio
Novato
Petaluma Center
Point Reyes Station
Ross
San Anselmo
San Francisco
San Geronimo
San Rafael
Santa Venetia
Sausalito
Sleepy Hollow
Stinson Beach
Strawberry
Tamalpais-Homestead Valley
Tiburon
Climate data from the nearest NOAA station, San Rafael Civic Ctr, Ca (8.3 mi from Lagunitas-Forest Knolls). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.