Morgan Hill, CA 95196 Frost Dates
When can you plant in Morgan Hill, CA?
Around 05/03 is the usual last spring frost, about 248 days away. The first fall frost typically arrives around 11/18, about 197 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
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.
How much risk comes with planting early here
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
At roughly 197 frost-free days, Morgan Hill places 18,622 of 40,283 ZIP codes in this dataset. Within CA, it ranks 2,294 of 2,555.
Learn more
the frost range covers how to read the range around Morgan Hill's dates instead of trusting one. local microclimates covers what one yard in Morgan Hill can differ from the 95196 normal.