Holy Cross, IA 52053 Frost Dates
When can you plant in Holy Cross, IA?
Around 04/21 is the usual last spring frost, about 236 days away. The first fall frost typically arrives around 10/18, about 178 frost-free days later.
The USDA Plant Hardiness Zone Map puts Holy Cross 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 Holy Cross before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Holy Cross's last frost
04/21 is the middle of 30 years of NOAA records, not a promise. Plant by 04/07 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Holy Cross compares
About 178 days separate Holy Cross's last and first frost, putting it 25,894 of 40,283 ZIP codes nationally. Within IA, it ranks 120 of 1,042.
Learn more
zone vs. frost date covers why Zone 5a and Holy Cross's frost date answer different questions. the frost range covers how to read the range around Holy Cross's dates instead of trusting one.