Springville, IA 52336 Frost Dates
Frost dates for Springville, IA, ZIP 52336
Typically, the last spring freeze lands around 04/27, roughly 242 days out. The first fall frost typically arrives around 10/13, about 170 frost-free days later.
The USDA Plant Hardiness Zone Map puts Springville in Zone 5a (-20 to -15°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 5a around Springville 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.
Why 04/27 isn't a guarantee
04/27 is the middle of 30 years of NOAA records, not a promise. Plant by 04/12 and you're betting against frost in roughly 9 years out of 10. 05/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Springville compares
At roughly 170 frost-free days, Springville places 29,103 of 40,283 ZIP codes in this dataset. Within IA, it ranks 304 of 1,042.
Learn more
the frost range explains how to read the range around Springville's dates instead of trusting one, and local microclimates explains what one yard in Springville can differ from the 52336 normal.