Holton, IN 47223 Frost Dates
Holton, IN: when does the frost end?
Around 04/21 is the usual last spring frost, about 236 days away. Fall's first freeze usually shows up around 10/21, roughly 180 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Holton 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 8 weeks until Holton's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Holton's last frost
04/21 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/10 and only about 1 year in 10 sees frost after that.
Holton against the rest of the dataset
About 180 days separate Holton's last and first frost, putting it 25,030 of 40,283 ZIP codes nationally. Within IN, it ranks 509 of 927.
Learn more
Before leaning on 47223's figures: zone vs. frost date explains why Zone 6b and Holton's frost date answer different questions, while the frost range explains how to read the range around Holton's dates instead of trusting one.