Morgan Hill, CA 95151 Frost Dates
Morgan Hill, CA: when does the frost end?
Around 02/02 is the usual last spring frost, about 158 days away. Fall's first freeze usually shows up around 12/06, roughly 310 days after the last spring frost.
Zone 9b (25 to 30°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Morgan Hill, not a forecast for this year.
Stretching the season past the first frost
With roughly 14 weeks until Morgan Hill's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Morgan Hill's last frost
02/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/31 and only about 1 year in 10 sees frost after that.
Morgan Hill against the rest of the dataset
At roughly 310 frost-free days, Morgan Hill places 3,552 of 40,283 ZIP codes in this dataset. Within CA, it ranks 1,472 of 2,555.
Learn more
Before leaning on 95151's figures: zone vs. frost date explains why Zone 9b and Morgan Hill's frost date answer different questions, while the frost range explains how to read the range around Morgan Hill's dates instead of trusting one.