Salamonia, IN 47381 Frost Dates
47381, near Salamonia, IN: the frost window
Typically, the last spring freeze lands around 04/28, roughly 243 days out. Fall's first freeze usually shows up around 10/15, roughly 171 days after the last spring frost.
Zone 6a (-10 to -5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Salamonia, not a forecast for this year.
Stretching the season past the first frost
Salamonia's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/28 isn't a guarantee
04/28 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/13 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/14 and only about 1 year in 10 sees frost after that.
Salamonia against the rest of the dataset
At roughly 171 frost-free days, Salamonia places 28,837 of 40,283 ZIP codes in this dataset. Within IN, it ranks 789 of 927.
Learn more
Two guides worth reading on 47381: local microclimates, on what one yard in Salamonia can differ from the 47381 normal, and zone vs. frost date, on why Zone 6a and Salamonia's frost date answer different questions.