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.
Typical weather
77° in September, 42.9° in December
Thirty-year averages, not a forecast. Any individual year can differ substantially.
| Month | High | Low | Rain |
|---|---|---|---|
| Jan | 59.3° | 43.1° | 2.91" |
| Feb | 61.9° | 45.1° | 3.11" |
| Mar | 64.4° | 47.4° | 2.35" |
| Apr | 66.8° | 49.5° | 1.2" |
| May | 69.3° | 52.4° | 0.58" |
| Jun | 74° | 55.1° | 0.15" |
| Jul | 74.7° | 57.4° | 0" |
| Aug | 76.4° | 58.2° | 0.1" |
| Sep | 77° | 57.6° | 0.08" |
| Oct | 73.5° | 53.5° | 0.81" |
| Nov | 65.1° | 47.2° | 1.51" |
| Dec | 59.4° | 42.9° | 3.2" |
This station records temperature and precipitation but not snowfall, so no snow column is shown. That is missing data, not a report of zero snow — San Leandro may well get plenty.
NOAA/NCEI 1991–2020 U.S. Climate Normals — station HAYWARD AIR TERMINAL, 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
- 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.