Nicasio, CA Weather & Growing Conditions
Overnight
47°F
Chance Light Rain
A chance of rain before 4am. Partly cloudy. Low around 47, with temperatures rising to around 49 overnight. East wind around 5 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 47°F | Chance Light Rain | 5 mph E | 25% |
| Wednesday | 65°F | Sunny | 2 to 12 mph N | 2% |
| Wednesday Night | 48°F | Mostly Cloudy | 3 to 10 mph NW | 2% |
| Thursday | 70°F | Mostly Sunny | 2 to 6 mph NW | 0% |
| Thursday Night | 46°F | Mostly Clear | 1 to 6 mph NW | 0% |
| Friday | 72°F | Sunny | 1 to 5 mph N | 0% |
| Friday Night | 48°F | Mostly Clear | 0 to 5 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 NW | 0% |
| Sunday Night | 50°F | Partly Cloudy | 1 to 6 mph NW | 0% |
| Monday | 70°F | Partly Sunny | 2 to 7 mph WNW | 2% |
| Monday Night | 50°F | Partly Cloudy | 1 to 7 mph WNW | 2% |
| Tuesday | 70°F | Sunny | 1 to 6 mph NW | 8% |
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 Nov 4, 2026.