National City, CA 91950 Frost Dates
When can you plant in National City, CA?
The NOAA station nearest to 91950 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 National City compares
At roughly 365 frost-free days, National City places 787 of 40,283 ZIP codes in this dataset. Within CA, it ranks 335 of 2,555.
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local microclimates covers what one yard in National City can differ from the 91950 normal. the methodology covers exactly which NOAA and USDA figures feed 91950's numbers.