Wilbur Park, MO 63123 Frost Dates
63123, near Wilbur Park, MO: the frost window
Typically, the last spring freeze lands around 04/01, roughly 216 days out. Fall's first freeze usually shows up around 11/04, roughly 218 days after the last spring frost.
Wilbur Park 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
Wilbur Park's growing season runs out in roughly 10 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
04/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/18 and only about 1 year in 10 sees frost after that.
Wilbur Park against the rest of the dataset
Wilbur Park's growing season runs about 218 days, ranking 13,332 of 40,283 US ZIP codes measured here, longest to shortest. Within MO, it ranks 93 of 1,129.
Learn more
Two guides worth reading on 63123: local microclimates, on what one yard in Wilbur Park can differ from the 63123 normal, and zone vs. frost date, on why Zone 7a and Wilbur Park's frost date answer different questions.