Aspinwall, IA 51432 Frost Dates
When can you plant in Aspinwall, IA?
The last spring frost here typically falls around 04/27, about 242 days from today. The first fall frost typically arrives around 10/11, about 166 frost-free days later.
The USDA Plant Hardiness Zone Map puts Aspinwall 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
About 6 weeks of growing season left in Aspinwall before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Aspinwall's last frost
04/27 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. 05/09 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Aspinwall compares
Aspinwall's growing season runs about 166 days, ranking 30,468 of 40,283 US ZIP codes measured here, longest to shortest. Within IA, it ranks 481 of 1,042.
Learn more
zone vs. frost date covers why Zone 5a and Aspinwall's frost date answer different questions. the frost range covers how to read the range around Aspinwall's dates instead of trusting one.