Westwood, MO 63022 Frost Dates
63022, near Westwood, MO: the frost window
Typically, the last spring freeze lands around 04/04, roughly 219 days out. Fall's first freeze usually shows up around 10/29, roughly 206 days after the last spring frost.
Westwood sits in USDA Zone 7a (0 to 5°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
Westwood's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/04 isn't a guarantee
04/04 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/21 and only about 1 year in 10 sees frost after that.
Westwood against the rest of the dataset
At roughly 206 frost-free days, Westwood places 16,117 of 40,283 ZIP codes in this dataset. Within MO, it ranks 235 of 1,129.
Learn more
Two guides worth reading on 63022: local microclimates, on what one yard in Westwood can differ from the 63022 normal, and zone vs. frost date, on why Zone 7a and Westwood's frost date answer different questions.