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.
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 ≈ 1.83 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
87.6° in August, 45.3° in December
Thirty-year averages, not a forecast. Any individual year can differ substantially.
| Month | High | Low | Rain | Snow |
|---|---|---|---|---|
| Jan | 68.6° | 46.1° | 3.56" | 0" |
| Feb | 68.2° | 47.1° | 4.22" | 0" |
| Mar | 70.9° | 50.5° | 2.53" | 0" |
| Apr | 73.8° | 52.7° | 0.61" | 0" |
| May | 75.6° | 57.6° | 0.48" | 0" |
| Jun | 80.8° | 61.5° | 0.13" | 0" |
| Jul | 85.5° | 65.2° | 0.04" | 0" |
| Aug | 87.6° | 65.5° | 0" | 0" |
| Sep | 86.7° | 63.6° | 0.13" | 0" |
| Oct | 80.7° | 57.4° | 0.61" | 0" |
| Nov | 74° | 50.6° | 0.92" | 0" |
| Dec | 67.8° | 45.3° | 2.44" | 0" |
NOAA/NCEI 1991–2020 U.S. Climate Normals — station SAN GABRIEL FIRE DEPT, CA US, 3.3 mi away.
Growing season zone 10b
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
- Nothing about a specific property — only the area around it.
- No flood zone, deliberately: that is parcel-level and this page would have to guess.
- Nothing about wildfire, radon, subsidence, soil or the building itself.
- Climate normals describe a typical year, not the year you are about to have.