Signal Hill, CA 90801 Frost Dates
Frost dates for Signal Hill, CA, ZIP 90801
The NOAA station nearest to 90801 does not report a usable frost-date normal for either event, so no last-frost or first-frost figure is shown here. The USDA hardiness zone below is still real: Zone 10b (35 to 40°F average annual minimum).
How Signal Hill compares
About 365 days separate Signal Hill's last and first frost, putting it 1,712 of 40,283 ZIP codes nationally. Within CA, it ranks 834 of 2,555.
Learn more
local microclimates explains what one yard in Signal Hill can differ from the 90801 normal, and the methodology explains exactly which NOAA and USDA figures feed 90801's numbers.