Signal Hill, CA 90755 Frost Dates
Frost dates for Signal Hill, CA, ZIP 90755
The NOAA station nearest to 90755 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
At roughly 365 frost-free days, Signal Hill places 1,711 of 40,283 ZIP codes in this dataset. Within CA, it ranks 833 of 2,555.
Learn more
zone vs. frost date explains why Zone 10b and Signal Hill's frost date answer different questions, and local microclimates explains what one yard in Signal Hill can differ from the 90755 normal.