Harman US

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

WhenTempForecastWindPrecip
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.