FrostDateCheck

Richland, IA 52585 Frost Dates

When can you plant in Richland, IA?

Zone 5b

The last spring frost here typically falls around 04/27, about 242 days from today. The first fall frost typically arrives around 10/12, about 168 frost-free days later.

Richland sits in USDA Zone 5b (-15 to -10°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.

What to do before the first frost

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

How much risk comes with planting early here

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. 05/14 is the safer bet, historically only a 1-in-10 chance of frost that late.

How Richland compares

Richland's growing season runs about 168 days, ranking 29,767 of 40,283 US ZIP codes measured here, longest to shortest. Within IA, it ranks 386 of 1,042.

Learn more

the frost range covers how to read the range around Richland's dates instead of trusting one. local microclimates covers what one yard in Richland can differ from the 52585 normal.