Udell, IA 52593 Frost Dates
Frost dates for Udell, IA, ZIP 52593
Typically, the last spring freeze lands around 04/28, roughly 243 days out. The first fall frost typically arrives around 10/14, about 168 frost-free days later.
The USDA Plant Hardiness Zone Map puts Udell in Zone 5b (-15 to -10°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 5b around Udell 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 Udell's last frost
04/28 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. 05/11 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Udell compares
Udell's growing season runs about 168 days, ranking 29,826 of 40,283 US ZIP codes measured here, longest to shortest. Within IA, it ranks 413 of 1,042.
Learn more
local microclimates explains what one yard in Udell can differ from the 52593 normal, and zone vs. frost date explains why Zone 5b and Udell's frost date answer different questions.