Nicasio, CA Weather & Growing Conditions
Today
82°F
Patchy Fog then Sunny
Patchy fog before 7am, then haze and patchy fog between 7am and 8am. Sunny. High near 82, with temperatures falling to around 77 in the afternoon. Southwest wind 2 to 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Patchy Fog then Sunny | 2 to 9 mph SW | 1% |
| Tonight | 52°F | Patchy Fog | 2 to 6 mph SW | 1% |
| Wednesday | 79°F | Patchy Fog then Mostly Sunny | 2 to 8 mph SW | 2% |
| Wednesday Night | 52°F | Areas Of Fog | 1 to 7 mph WSW | 0% |
| Thursday | 78°F | Areas Of Fog then Mostly Sunny | 1 to 8 mph WSW | 0% |
| Thursday Night | 52°F | Partly Cloudy then Patchy Fog | 1 to 8 mph W | 0% |
| Friday | 84°F | Patchy Fog then Sunny | 1 to 8 mph W | 0% |
| Friday Night | 54°F | Partly Cloudy | 0 to 8 mph WSW | 0% |
| Saturday | 82°F | Sunny | 0 to 8 mph WSW | 0% |
| Saturday Night | 56°F | Mostly Clear | 3 to 8 mph W | 0% |
| Sunday | 80°F | Sunny | 3 to 9 mph W | 0% |
| Sunday Night | 53°F | Mostly Clear | 3 to 9 mph WSW | 0% |
| Monday | 73°F | Sunny | 3 to 9 mph SW | 0% |
| Monday Night | 52°F | Partly Cloudy | 2 to 9 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Nicasio, CA
Last spring frost
Jan 11
First fall frost
Dec 21
Growing season
349 days
Hardiness zone
9b
Explore more for Nicasio, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, San Rafael Civic Ctr, Ca (10.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.