Morgan Hill, CA 95193 Frost Dates
95193, near Morgan Hill, CA: the frost window
Typically, the last spring freeze lands around 05/03, roughly 248 days out. Fall's first freeze usually shows up around 11/18, roughly 197 days after the last spring frost.
Morgan Hill sits in USDA Zone 9b (25 to 30°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.
Stretching the season past the first frost
Morgan Hill's growing season runs out in roughly 12 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
05/03 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 06/05 and only about 1 year in 10 sees frost after that.
Morgan Hill against the rest of the dataset
At roughly 197 frost-free days, Morgan Hill places 18,620 of 40,283 ZIP codes in this dataset. Within CA, it ranks 2,292 of 2,555.
Learn more
Two guides worth reading on 95193: the frost range, on how to read the range around Morgan Hill's dates instead of trusting one, and local microclimates, on what one yard in Morgan Hill can differ from the 95193 normal.