Keokuk, IA 52632 Frost Dates
When can you plant in Keokuk, IA?
Typically, the last spring freeze lands around 04/12, roughly 227 days out. The first fall frost typically arrives around 10/25, about 194 frost-free days later.
Keokuk sits in USDA Zone 6a (-10 to -5°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
About 8 weeks of growing season left in Keokuk before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 04/12 isn't a guarantee
04/12 is the middle of 30 years of NOAA records, not a promise. Plant by 04/01 and you're betting against frost in roughly 9 years out of 10. 04/26 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Keokuk compares
At roughly 194 frost-free days, Keokuk places 19,464 of 40,283 ZIP codes in this dataset. Within IA, it ranks 4 of 1,042.
Learn more
the frost range covers how to read the range around Keokuk's dates instead of trusting one. local microclimates covers what one yard in Keokuk can differ from the 52632 normal.