Aurora, IA 50607 Frost Dates
When can you plant in Aurora, IA?
The last spring frost here typically falls around 04/27, about 242 days from today. The first fall frost typically arrives around 10/13, about 169 frost-free days later.
The USDA Plant Hardiness Zone Map puts Aurora 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 7 weeks of growing season left in Aurora before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Aurora's last frost
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 Aurora compares
About 169 days separate Aurora's last and first frost, putting it 29,616 of 40,283 ZIP codes nationally. Within IA, it ranks 358 of 1,042.
Learn more
local microclimates covers what one yard in Aurora can differ from the 50607 normal. zone vs. frost date covers why Zone 5a and Aurora's frost date answer different questions.