Redding, IA 50860 Frost Dates
Frost dates for Redding, IA, ZIP 50860
Typically, the last spring freeze lands around 04/25, roughly 240 days out. The first fall frost typically arrives around 10/12, about 169 frost-free days later.
The USDA Plant Hardiness Zone Map puts Redding 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 Redding 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 04/25 isn't a guarantee
04/25 is the middle of 30 years of NOAA records, not a promise. Plant by 04/10 and you're betting against frost in roughly 9 years out of 10. 05/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Redding compares
At roughly 169 frost-free days, Redding places 29,630 of 40,283 ZIP codes in this dataset. Within IA, it ranks 363 of 1,042.
Learn more
local microclimates explains what one yard in Redding can differ from the 50860 normal, and zone vs. frost date explains why Zone 5b and Redding's frost date answer different questions.