Jasper, IN 47547 Frost Dates
Jasper, IN: when does the frost end?
Around 04/10 is the usual last spring frost, about 225 days away. Fall's first freeze usually shows up around 11/01, roughly 204 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Jasper in Zone 6b (-5 to 0°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 9 weeks until Jasper's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/10 isn't a guarantee
04/10 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/27 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/26 and only about 1 year in 10 sees frost after that.
Jasper against the rest of the dataset
At roughly 204 frost-free days, Jasper places 16,531 of 40,283 ZIP codes in this dataset. Within IN, it ranks 69 of 927.
Learn more
Before leaning on 47547's figures: the frost range explains how to read the range around Jasper's dates instead of trusting one, while local microclimates explains what one yard in Jasper can differ from the 47547 normal.