Morgan Hill, CA 95044 Frost Dates
When can you plant in Morgan Hill, CA?
Typically, the last spring freeze lands around 05/03, roughly 248 days out. The first fall frost typically arrives around 11/18, about 197 frost-free days later.
Morgan Hill sits in USDA Zone 10a (30 to 35°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 12 weeks of growing season left in Morgan Hill before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Morgan Hill's last frost
05/03 is the middle of 30 years of NOAA records, not a promise. Plant by 04/07 and you're betting against frost in roughly 9 years out of 10. 06/05 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Morgan Hill compares
About 197 days separate Morgan Hill's last and first frost, putting it 18,592 of 40,283 ZIP codes nationally. Within CA, it ranks 2,264 of 2,555.
Learn more
local microclimates covers what one yard in Morgan Hill can differ from the 95044 normal. zone vs. frost date covers why Zone 10a and Morgan Hill's frost date answer different questions.