San Rafael, CA Weather & Growing Conditions
Tonight
56°F
Mostly Clear
Mostly clear, with a low around 56. Southwest wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Mostly Clear | 1 mph SW | 0% |
| Saturday | 83°F | Sunny | 0 to 6 mph SSW | 0% |
| Saturday Night | 56°F | Partly Cloudy | 2 mph WSW | 0% |
| Sunday | 74°F | Mostly Cloudy | 1 to 5 mph SW | 1% |
| Sunday Night | 55°F | Mostly Cloudy | 3 mph SW | 1% |
| Monday | 74°F | Mostly Sunny | 1 to 7 mph SW | 1% |
| Monday Night | 56°F | Partly Cloudy | 1 to 6 mph SW | 1% |
| Tuesday | 76°F | Mostly Sunny | 1 to 6 mph SW | 0% |
| Tuesday Night | 56°F | Mostly Clear | 0 to 5 mph SW | 0% |
| Wednesday | 88°F | Sunny | 2 mph W | 0% |
| Wednesday Night | 59°F | Mostly Clear | 2 mph WSW | 0% |
| Thursday | 88°F | Sunny | 0 to 3 mph WSW | 0% |
| Thursday Night | 58°F | Mostly Clear | 0 to 3 mph SSW | 0% |
| Friday | 81°F | Mostly Sunny | 0 to 6 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Rafael, CA
Last spring frost
Jan 11
First fall frost
Dec 21
Growing season
349 days
Hardiness zone
10a
Explore more for San Rafael, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, San Rafael Civic Ctr, Ca (2.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.