Packwood, IA 52580 Frost Dates
Frost dates for Packwood, IA, ZIP 52580
Typically, the last spring freeze lands around 04/27, roughly 242 days out. The first fall frost typically arrives around 10/12, about 168 frost-free days later.
Packwood sits in USDA Zone 5b (-15 to -10°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 5b around Packwood 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.
The actual range around Packwood's last frost
04/27 is the middle of 30 years of NOAA records, not a promise. Plant by 04/13 and you're betting against frost in roughly 9 years out of 10. 05/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Packwood compares
About 168 days separate Packwood's last and first frost, putting it 29,796 of 40,283 ZIP codes nationally. Within IA, it ranks 397 of 1,042.
Learn more
the frost range explains how to read the range around Packwood's dates instead of trusting one, and local microclimates explains what one yard in Packwood can differ from the 52580 normal.