Carbon, IN 47837 Frost Dates
Carbon, IN: when does the frost end?
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.
Carbon sits in USDA Zone 6a (-10 to -5°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 6 weeks until Carbon's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
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.
Carbon against the rest of the dataset
At roughly 164 frost-free days, Carbon places 31,192 of 40,283 ZIP codes in this dataset. Within IN, it ranks 898 of 927.
Learn more
Before leaning on 47837's figures: zone vs. frost date explains why Zone 6a and Carbon's frost date answer different questions, while the frost range explains how to read the range around Carbon's dates instead of trusting one.