Sulphur Springs, IN 47388 Frost Dates
Sulphur Springs, IN: when does the frost end?
Typically, the last spring freeze lands around 04/27, roughly 242 days out. Fall's first freeze usually shows up around 10/17, roughly 173 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 Sulphur Springs, not a forecast for this year.
Stretching the season past the first frost
With roughly 7 weeks until Sulphur Springs's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Sulphur Springs's last frost
04/27 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.
Sulphur Springs against the rest of the dataset
About 173 days separate Sulphur Springs's last and first frost, putting it 28,070 of 40,283 ZIP codes nationally. Within IN, it ranks 743 of 927.
Learn more
Before leaning on 47388's figures: the frost range explains how to read the range around Sulphur Springs's dates instead of trusting one, while local microclimates explains what one yard in Sulphur Springs can differ from the 47388 normal.