Clinton, IA 52732 Frost Dates
When can you plant in Clinton, IA?
The last spring frost here typically falls around 04/22, about 237 days from today. The first fall frost typically arrives around 10/16, about 175 frost-free days later.
The USDA Plant Hardiness Zone Map puts Clinton 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
About 7 weeks of growing season left in Clinton before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Clinton's last frost
04/22 is the middle of 30 years of NOAA records, not a promise. Plant by 04/09 and you're betting against frost in roughly 9 years out of 10. 05/08 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Clinton compares
At roughly 175 frost-free days, Clinton places 26,770 of 40,283 ZIP codes in this dataset. Within IA, it ranks 170 of 1,042.
Learn more
the frost range covers how to read the range around Clinton's dates instead of trusting one. local microclimates covers what one yard in Clinton can differ from the 52732 normal.