New Hampton, MO 64467 Frost Dates
64467, near New Hampton, MO: the frost window
The last spring frost here typically falls around 04/16, about 231 days from today. Fall's first freeze usually shows up around 10/22, roughly 186 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts New Hampton in Zone 5b (-15 to -10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
New Hampton'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.
Why 04/16 isn't a guarantee
04/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/01 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/03 and only about 1 year in 10 sees frost after that.
New Hampton against the rest of the dataset
New Hampton's growing season runs about 186 days, ranking 22,951 of 40,283 US ZIP codes measured here, longest to shortest. Within MO, it ranks 885 of 1,129.
Learn more
Two guides worth reading on 64467: zone vs. frost date, on why Zone 5b and New Hampton's frost date answer different questions, and the frost range, on how to read the range around New Hampton's dates instead of trusting one.