San Rafael, CA Weather & Growing Conditions
Today
84°F
Patchy Fog then Sunny
Patchy fog between 7am and 8am. Sunny. High near 84, with temperatures falling to around 79 in the afternoon. Southwest wind 1 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Patchy Fog then Sunny | 1 to 8 mph SW | 0% |
| Tonight | 54°F | Partly Cloudy | 1 to 7 mph W | 0% |
| Sunday | 76°F | Mostly Cloudy | 1 to 6 mph WSW | 1% |
| Sunday Night | 54°F | Mostly Cloudy | 1 to 6 mph WSW | 1% |
| Monday | 76°F | Mostly Sunny | 1 to 7 mph SW | 0% |
| Monday Night | 55°F | Partly Cloudy | 1 to 7 mph SW | 1% |
| Tuesday | 78°F | Mostly Sunny | 1 to 6 mph SW | 0% |
| Tuesday Night | 54°F | Mostly Clear | 0 to 6 mph SW | 0% |
| Wednesday | 89°F | Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 58°F | Mostly Clear | 0 to 5 mph W | 0% |
| Thursday | 90°F | Sunny | 0 to 5 mph SW | 0% |
| Thursday Night | 58°F | Mostly Clear | 1 to 5 mph WSW | 0% |
| Friday | 82°F | Sunny | 1 to 7 mph WSW | 1% |
| Friday Night | 56°F | Partly Cloudy | 1 to 7 mph WSW | 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
9b
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 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.