North Liberty, IN 46554 Frost Dates
Frost dates for North Liberty, IN, ZIP 46554
The last spring frost here typically falls around 05/01, about 246 days from today. The first fall frost typically arrives around 10/13, about 163 frost-free days later.
The USDA Plant Hardiness Zone Map puts North Liberty in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 6a around North Liberty has about 7 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.
The actual range around North Liberty's last frost
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/18 and you're betting against frost in roughly 9 years out of 10. 05/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How North Liberty compares
At roughly 163 frost-free days, North Liberty places 31,424 of 40,283 ZIP codes in this dataset. Within IN, it ranks 908 of 927.
Learn more
local microclimates explains what one yard in North Liberty can differ from the 46554 normal, and zone vs. frost date explains why Zone 6a and North Liberty's frost date answer different questions.