Westmorland, CA 92275 Frost Dates
92275, near Westmorland, CA: the frost window
Typically, the last spring freeze lands around 01/07, roughly 132 days out. Fall's first freeze usually shows up around 01/04, roughly 365 days after the last spring frost.
Westmorland sits in USDA Zone 10a (30 to 35°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
Westmorland's growing season runs out in roughly 18 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
01/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/07 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/12 and only about 1 year in 10 sees frost after that.
Westmorland against the rest of the dataset
At roughly 365 frost-free days, Westmorland places 1,953 of 40,283 ZIP codes in this dataset. Within CA, it ranks 892 of 2,555.
Learn more
Two guides worth reading on 92275: the frost range, on how to read the range around Westmorland's dates instead of trusting one, and local microclimates, on what one yard in Westmorland can differ from the 92275 normal.