San Bruno, CA Weather & Growing Conditions
Tonight
58°F
Partly Cloudy
Partly cloudy, with a low around 58. West wind 6 to 13 mph, with gusts as high as 21 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Partly Cloudy | 6 to 13 mph W | 1% |
| Saturday | 71°F | Mostly Sunny | 5 to 17 mph W | 0% |
| Saturday Night | 57°F | Mostly Cloudy | 8 to 16 mph W | 1% |
| Sunday | 66°F | Mostly Cloudy | 8 to 14 mph W | 3% |
| Sunday Night | 57°F | Mostly Cloudy | 6 to 14 mph W | 3% |
| Monday | 68°F | Mostly Sunny | 6 to 14 mph WSW | 2% |
| Monday Night | 57°F | Partly Cloudy | 6 to 14 mph WSW | 1% |
| Tuesday | 70°F | Mostly Sunny | 5 to 12 mph WSW | 1% |
| Tuesday Night | 58°F | Partly Cloudy | 3 to 12 mph WSW | 0% |
| Wednesday | 74°F | Mostly Sunny | 2 to 10 mph SW | 0% |
| Wednesday Night | 59°F | Partly Cloudy | 1 to 10 mph WSW | 0% |
| Thursday | 76°F | Mostly Sunny | 1 to 12 mph W | 0% |
| Thursday Night | 60°F | Partly Cloudy | 6 to 12 mph WSW | 0% |
| Friday | 71°F | Mostly Sunny | 6 to 14 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Bruno, CA
Last spring frost
Jan 11
First fall frost
Jan 10
Growing season
365 days
Hardiness zone
10a
Explore more for San Bruno, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Pacifica 4 Sse, Ca (3.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.