Lancaster, CA 93536 Frost Dates
93536, near Lancaster, CA: the frost window
Around 04/06 is the usual last spring frost, about 221 days away. Fall's first freeze usually shows up around 11/29, roughly 236 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Lancaster in Zone 8b (15 to 20°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Lancaster's growing season runs out in roughly 13 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
04/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/20 and only about 1 year in 10 sees frost after that.
Lancaster against the rest of the dataset
Lancaster's growing season runs about 236 days, ranking 9,225 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 2,144 of 2,555.
Learn more
Two guides worth reading on 93536: the frost range, on how to read the range around Lancaster's dates instead of trusting one, and local microclimates, on what one yard in Lancaster can differ from the 93536 normal.