Advance, MO 63730 Frost Dates
63730, near Advance, MO: the frost window
Typically, the last spring freeze lands around 04/07, roughly 222 days out. Fall's first freeze usually shows up around 10/27, roughly 204 days after the last spring frost.
Zone 7a (0 to 5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Advance, not a forecast for this year.
Stretching the season past the first frost
Advance'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 04/07 isn't a guarantee
04/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/22 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.
Advance against the rest of the dataset
Advance's growing season runs about 204 days, ranking 16,661 of 40,283 US ZIP codes measured here, longest to shortest. Within MO, it ranks 294 of 1,129.
Learn more
Two guides worth reading on 63730: local microclimates, on what one yard in Advance can differ from the 63730 normal, and zone vs. frost date, on why Zone 7a and Advance's frost date answer different questions.