Alleman, IA 50007 Frost Dates
When can you plant in Alleman, IA?
Around 04/23 is the usual last spring frost, about 238 days away. The first fall frost typically arrives around 10/15, about 173 frost-free days later.
Zone 5b (-15 to -10°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 Alleman, not a forecast for this year.
What to do before the first frost
About 7 weeks of growing season left in Alleman before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Alleman's last frost
04/23 is the middle of 30 years of NOAA records, not a promise. Plant by 04/08 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 Alleman compares
About 173 days separate Alleman's last and first frost, putting it 28,056 of 40,283 ZIP codes nationally. Within IA, it ranks 260 of 1,042.
Learn more
local microclimates covers what one yard in Alleman can differ from the 50007 normal. zone vs. frost date covers why Zone 5b and Alleman's frost date answer different questions.