Amboy, IN 46911 Frost Dates
When can you plant in Amboy, IN?
Typically, the last spring freeze lands around 04/23, roughly 238 days out. The first fall frost typically arrives around 10/21, about 181 frost-free days later.
Amboy 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.
What to do before the first frost
About 8 weeks of growing season left in Amboy before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/23 is the middle of 30 years of NOAA records, not a promise. Plant by 04/08 and you're betting against frost in roughly 9 years out of 10. 05/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Amboy compares
Amboy's growing season runs about 181 days, ranking 24,711 of 40,283 US ZIP codes measured here, longest to shortest. Within IN, it ranks 476 of 927.
Learn more
local microclimates covers what one yard in Amboy can differ from the 46911 normal. zone vs. frost date covers why Zone 6a and Amboy's frost date answer different questions.