Luana, IA 52156 Frost Dates
Frost dates for Luana, IA, ZIP 52156
Typically, the last spring freeze lands around 05/02, roughly 247 days out. The first fall frost typically arrives around 10/11, about 161 frost-free days later.
Luana sits in USDA Zone 5a (-20 to -15°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 5a around Luana has about 6 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 05/02 isn't a guarantee
05/02 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 and you're betting against frost in roughly 9 years out of 10. 05/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Luana compares
At roughly 161 frost-free days, Luana places 32,166 of 40,283 ZIP codes in this dataset. Within IA, it ranks 751 of 1,042.
Learn more
zone vs. frost date explains why Zone 5a and Luana's frost date answer different questions, and the frost range explains how to read the range around Luana's dates instead of trusting one.