Montezuma, IN 47854 Frost Dates
47854, near Montezuma, IN: the frost window
Around 04/30 is the usual last spring frost, about 245 days away. Fall's first freeze usually shows up around 10/12, roughly 164 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Montezuma in Zone 6a (-10 to -5°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
Montezuma's growing season runs out in roughly 6 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
04/30 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/15 and only about 1 year in 10 sees frost after that.
Montezuma against the rest of the dataset
About 164 days separate Montezuma's last and first frost, putting it 31,067 of 40,283 ZIP codes nationally. Within IN, it ranks 878 of 927.
Learn more
Two guides worth reading on 47854: local microclimates, on what one yard in Montezuma can differ from the 47854 normal, and zone vs. frost date, on why Zone 6a and Montezuma's frost date answer different questions.