San Bruno, CA Weather & Growing Conditions
Tonight
51°F
Chance Light Rain then Mostly Cloudy
A chance of rain before 10pm. Mostly cloudy, with a low around 51. East wind around 9 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Chance Light Rain then Mostly Cloudy | 9 mph E | 30% |
| Wednesday | 66°F | Sunny | 6 to 17 mph NNE | 4% |
| Wednesday Night | 53°F | Mostly Cloudy | 3 to 17 mph NW | 0% |
| Thursday | 68°F | Sunny | 2 to 12 mph NNW | 0% |
| Thursday Night | 53°F | Mostly Clear | 3 to 12 mph NW | 0% |
| Friday | 71°F | Sunny | 2 to 8 mph N | 0% |
| Friday Night | 55°F | Mostly Clear | 2 to 8 mph N | 0% |
| Saturday | 71°F | Sunny | 2 to 7 mph NNE | 0% |
| Saturday Night | 57°F | Mostly Clear | 5 to 8 mph NW | 0% |
| Sunday | 69°F | Mostly Sunny | 5 to 9 mph NNW | 0% |
| Sunday Night | 56°F | Mostly Cloudy | 3 to 9 mph NW | 0% |
| Monday | 67°F | Partly Sunny | 3 to 12 mph NW | 2% |
| Monday Night | 56°F | Mostly Cloudy | 3 to 12 mph NW | 2% |
| Tuesday | 68°F | Mostly Sunny | 2 to 8 mph NNW | 8% |
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 Nov 4, 2026.