Terre Haute, IN 47801 Frost Dates
Terre Haute, IN: when does the frost end?
Around 04/15 is the usual last spring frost, about 230 days away. Fall's first freeze usually shows up around 10/19, roughly 187 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Terre Haute 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
With roughly 7 weeks until Terre Haute's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Terre Haute's last frost
04/15 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/31 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.
Terre Haute against the rest of the dataset
Terre Haute's growing season runs about 187 days, ranking 22,272 of 40,283 US ZIP codes measured here, longest to shortest. Within IN, it ranks 291 of 927.
Learn more
Before leaning on 47801's figures: the frost range explains how to read the range around Terre Haute's dates instead of trusting one, while local microclimates explains what one yard in Terre Haute can differ from the 47801 normal.