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 high
Design category D
High seismic hazard. Strong ground shaking is expected over the life of a building. Substantial seismic-resistant design, detailing, and inspection are required by code. The ASCE 7 Seismic Design Category here is D. (Short-period design value Ss ≈ 1.394 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
84.6° in August, 48.1° in December
Thirty-year averages, not a forecast. Any individual year can differ substantially.
| Month | High | Low | Rain | Snow |
|---|---|---|---|---|
| Jan | 69.3° | 48.7° | 2.88" | 0" |
| Feb | 69.3° | 49.5° | 3.16" | 0" |
| Mar | 71.2° | 51.8° | 1.71" | 0" |
| Apr | 73.2° | 54.2° | 0.82" | 0" |
| May | 74.7° | 58.1° | 0.29" | 0" |
| Jun | 77.7° | 61.3° | 0.08" | 0" |
| Jul | 82.5° | 64.7° | 0.03" | 0" |
| Aug | 84.6° | 65.3° | 0" | 0" |
| Sep | 83.8° | 63.9° | 0.12" | 0" |
| Oct | 79.4° | 59.4° | 0.5" | 0" |
| Nov | 74° | 52.8° | 0.79" | 0" |
| Dec | 68.4° | 48.1° | 2.16" | 0" |
NOAA/NCEI 1991–2020 U.S. Climate Normals — station SANTA ANA FIRE STN, CA US, 7.3 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
- 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.