FrostDateCheck

Zearing, IA 50278 Frost Dates

When can you plant in Zearing, IA?

Zone 5a

The last spring frost here typically falls around 04/24, about 239 days from today. The first fall frost typically arrives around 10/12, about 170 frost-free days later.

Zone 5a (-20 to -15°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Zearing, not a forecast for this year.

What to do before the first frost

About 6 weeks of growing season left in Zearing before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.

The actual range around Zearing's last frost

04/24 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. 05/07 is the safer bet, historically only a 1-in-10 chance of frost that late.

How Zearing compares

Zearing's growing season runs about 170 days, ranking 29,187 of 40,283 US ZIP codes measured here, longest to shortest. Within IA, it ranks 312 of 1,042.

Learn more

the frost range covers how to read the range around Zearing's dates instead of trusting one. local microclimates covers what one yard in Zearing can differ from the 50278 normal.