Commerce, MO 63742 Frost Dates
63742, near Commerce, MO: the frost window
Typically, the last spring freeze lands around 04/05, roughly 220 days out. Fall's first freeze usually shows up around 10/25, roughly 201 days after the last spring frost.
Commerce 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
Commerce's growing season runs out in roughly 8 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
04/05 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/19 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.
Commerce against the rest of the dataset
Commerce's growing season runs about 201 days, ranking 17,701 of 40,283 US ZIP codes measured here, longest to shortest. Within MO, it ranks 387 of 1,129.
Learn more
Two guides worth reading on 63742: local microclimates, on what one yard in Commerce can differ from the 63742 normal, and zone vs. frost date, on why Zone 7a and Commerce's frost date answer different questions.