Morgan Hill, CA 95046 Frost Dates
Frost dates for Morgan Hill, CA, ZIP 95046
The last spring frost here typically falls around 02/24, about 180 days from today. The first fall frost typically arrives around 11/27, about 277 frost-free days later.
The USDA Plant Hardiness Zone Map puts Morgan Hill in Zone 9b (25 to 30°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 9b around Morgan Hill has about 13 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Morgan Hill's last frost
02/24 is the middle of 30 years of NOAA records, not a promise. Plant by 01/23 and you're betting against frost in roughly 9 years out of 10. 04/04 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Morgan Hill compares
At roughly 277 frost-free days, Morgan Hill places 4,966 of 40,283 ZIP codes in this dataset. Within CA, it ranks 1,818 of 2,555.
Learn more
the frost range explains how to read the range around Morgan Hill's dates instead of trusting one, and local microclimates explains what one yard in Morgan Hill can differ from the 95046 normal.