Griffin, IN 47616 Frost Dates
Frost dates for Griffin, IN, ZIP 47616
The last spring frost here typically falls around 04/07, about 222 days from today. The first fall frost typically arrives around 10/25, about 201 frost-free days later.
Griffin sits in USDA Zone 7a (0 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
Zone 7a around Griffin has about 8 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 04/07 isn't a guarantee
04/07 is the middle of 30 years of NOAA records, not a promise. Plant by 03/24 and you're betting against frost in roughly 9 years out of 10. 04/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Griffin compares
At roughly 201 frost-free days, Griffin places 17,678 of 40,283 ZIP codes in this dataset. Within IN, it ranks 113 of 927.
Learn more
local microclimates explains what one yard in Griffin can differ from the 47616 normal, and zone vs. frost date explains why Zone 7a and Griffin's frost date answer different questions.