Lathrop, CA 95269 Frost Dates
95269, near Lathrop, CA: the frost window
Typically, the last spring freeze lands around 02/06, roughly 162 days out. Fall's first freeze usually shows up around 12/01, roughly 304 days after the last spring frost.
Lathrop 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
Lathrop's growing season runs out in roughly 14 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Lathrop's last frost
02/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/28 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.
Lathrop against the rest of the dataset
At roughly 304 frost-free days, Lathrop places 3,758 of 40,283 ZIP codes in this dataset. Within CA, it ranks 1,523 of 2,555.
Learn more
Two guides worth reading on 95269: the frost range, on how to read the range around Lathrop's dates instead of trusting one, and local microclimates, on what one yard in Lathrop can differ from the 95269 normal.