Fairfax, CA Weather & Growing Conditions
This Afternoon
65°F
Sunny
Sunny. High near 65, with temperatures falling to around 61 in the afternoon. Northwest wind 5 to 10 mph, with gusts as high as 21 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Sunny | 5 to 10 mph NW | 1% |
| Tonight | 50°F | Mostly Cloudy | 5 to 12 mph NW | 1% |
| Thursday | 69°F | Sunny | 1 to 6 mph NW | 0% |
| Thursday Night | 50°F | Mostly Clear | 1 to 6 mph NW | 0% |
| Friday | 70°F | Sunny | 3 mph N | 0% |
| Friday Night | 51°F | Mostly Clear | 0 to 3 mph NNW | 0% |
| Saturday | 73°F | Sunny | 1 to 5 mph NE | 0% |
| Saturday Night | 51°F | Mostly Clear | 1 to 5 mph NW | 0% |
| Sunday | 70°F | Mostly Sunny | 2 mph NNW | 0% |
| Sunday Night | 52°F | Partly Cloudy | 5 mph NW | 0% |
| Monday | 69°F | Mostly Sunny | 5 mph NW | 0% |
| Monday Night | 51°F | Partly Cloudy | 2 to 6 mph NW | 1% |
| Tuesday | 69°F | Sunny | 3 mph NNW | 2% |
| Tuesday Night | 54°F | Partly Cloudy | 3 mph W | 11% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fairfax, CA
Last spring frost
Jan 16
First fall frost
Dec 18
Growing season
334 days
Hardiness zone
10a
Explore more for Fairfax, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Kentfield, Ca (4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.