Fairmount, IN 46928 Frost Dates
46928, near Fairmount, IN: the frost window
Typically, the last spring freeze lands around 04/26, roughly 241 days out. Fall's first freeze usually shows up around 10/20, roughly 175 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 Fairmount, not a forecast for this year.
Stretching the season past the first frost
Fairmount's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Fairmount's last frost
04/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/12 and only about 1 year in 10 sees frost after that.
Fairmount against the rest of the dataset
At roughly 175 frost-free days, Fairmount places 26,948 of 40,283 ZIP codes in this dataset. Within IN, it ranks 632 of 927.
Learn more
Two guides worth reading on 46928: local microclimates, on what one yard in Fairmount can differ from the 46928 normal, and zone vs. frost date, on why Zone 6a and Fairmount's frost date answer different questions.