Seymour, IN 47228 Frost Dates
When can you plant in Seymour, IN?
Typically, the last spring freeze lands around 04/16, roughly 231 days out. The first fall frost typically arrives around 10/21, about 187 frost-free days later.
Zone 6b (-5 to 0°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 Seymour, not a forecast for this year.
What to do before the first frost
About 8 weeks of growing season left in Seymour before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Seymour's last frost
04/16 is the middle of 30 years of NOAA records, not a promise. Plant by 04/02 and you're betting against frost in roughly 9 years out of 10. 05/02 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Seymour compares
At roughly 187 frost-free days, Seymour places 22,296 of 40,283 ZIP codes in this dataset. Within IN, it ranks 300 of 927.
Learn more
zone vs. frost date covers why Zone 6b and Seymour's frost date answer different questions. the frost range covers how to read the range around Seymour's dates instead of trusting one.