Greenfield, IN 46140 Frost Dates
Greenfield, IN: when does the frost end?
The last spring frost here typically falls around 04/19, about 234 days from today. Fall's first freeze usually shows up around 10/22, roughly 185 days after the last spring frost.
Greenfield 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 8 weeks until Greenfield's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Greenfield's last frost
04/19 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 05/07 and only about 1 year in 10 sees frost after that.
Greenfield against the rest of the dataset
About 185 days separate Greenfield's last and first frost, putting it 23,075 of 40,283 ZIP codes nationally. Within IN, it ranks 363 of 927.
Learn more
Before leaning on 46140's figures: local microclimates explains what one yard in Greenfield can differ from the 46140 normal, while zone vs. frost date explains why Zone 6a and Greenfield's frost date answer different questions.