Downey, CA 90241 Frost Dates
Frost dates for Downey, CA, ZIP 90241
The NOAA station nearest to 90241 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 Downey compares
At roughly 365 frost-free days, Downey places 469 of 40,283 ZIP codes in this dataset. Within CA, it ranks 192 of 2,555.
Learn more
zone vs. frost date explains why Zone 10b and Downey's frost date answer different questions, and local microclimates explains what one yard in Downey can differ from the 90241 normal.