Lemon Grove, CA 91945 Frost Dates
Lemon Grove, CA: when does the frost end?
The NOAA station nearest to 91945 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).
Lemon Grove against the rest of the dataset
At roughly 365 frost-free days, Lemon Grove places 1,136 of 40,283 ZIP codes in this dataset. Within CA, it ranks 485 of 2,555.
Learn more
Before leaning on 91945's figures: zone vs. frost date explains why Zone 10b and Lemon Grove's frost date answer different questions, while local microclimates explains what one yard in Lemon Grove can differ from the 91945 normal.