Address reportCitiesCalifornia › San Bruno

San Bruno, CA

Earthquake hazard, typical weather and growing season from public federal data. Population 42,443.

Flood zone: it depends on the exact parcel

There is no such thing as a flood zone for a whole city. Two houses on the same street can sit in different zones, and it is the single fact here that changes most over a short distance. So this page does not guess one.

Look up a specific San Bruno address →

Typical weather

72.3° in September, 45.3° in January

Thirty-year averages, not a forecast. Any individual year can differ substantially.

MonthHighLowRainSnow
Jan58.1°45.3°6.14"0"
Feb60.1°46°6.48"0"
Mar61.4°46.1°4.45"0"
Apr63.9°47.6°2.36"0"
May66.9°49.4°1"0"
Jun68.8°50.8°0.25"0"
Jul69.4°52.3°0.01"0"
Aug71°53.3°0.08"0"
Sep72.3°53.4°0.11"0"
Oct70.1°52.3°1.5"0"
Nov64.1°49.7°2.86"0"
Dec58.8°46.2°6.64"0"

NOAA/NCEI 1991–2020 U.S. Climate Normals — station PACIFICA 4 SSE, CA US, 3.2 mi away.

Growing season zone 10a

365 frost-free days

Last spring frost around n/a, first fall frost around n/a. Roughly half of years see frost outside that window.

2023 USDA Plant Hardiness Zone Map and NOAA/NCEI 1991–2020 frost normals.

What this page does not tell you

Run the full report on an address →