Address reportCitiesCalifornia › Los Angeles

Los Angeles, CA

Earthquake hazard, typical weather and growing season from public federal data. Population 3,884,307.

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 Los Angeles address →

Earthquake hazard very-high

Design category D

Very high seismic hazard — at or near a major active fault. Very strong ground shaking is likely and the most stringent seismic-design provisions apply. A site-specific ground-motion study is typically required. The ASCE 7 Seismic Design Category here is D. (Short-period design value Ss ≈ 1.974 g — the standard headline measure of ground-shaking hazard.)

USGS Seismic Design Web Services (ASCE 7), assuming Site Class D — stiff or unknown soil. Real soil conditions can move the category either way.

Typical weather

79.1° in August, 47.3° in December

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

MonthHighLowRainSnow
Jan66.6°48°3.25"0"
Feb66.5°48.5°3.46"0"
Mar68.2°50.8°2.16"0"
Apr70.8°53.1°0.6"0"
May72°56.6°0.38"0"
Jun74.7°60.3°0.06"0"
Jul78°63.1°0.02"0"
Aug79.1°63.6°0"0"
Sep78.4°62.2°0.13"0"
Oct75.8°57.9°0.56"0"
Nov70.6°51.9°0.94"0"
Dec65.9°47.3°2.49"0"

NOAA/NCEI 1991–2020 U.S. Climate Normals — station CULVER CITY, CA US, 7.5 mi away.

Growing season zone 10b

364 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

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