Wyoming, IA 52362 Frost Dates
When can you plant in Wyoming, IA?
Typically, the last spring freeze lands around 04/27, roughly 242 days out. The first fall frost typically arrives around 10/10, about 165 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 Wyoming, not a forecast for this year.
What to do before the first frost
About 6 weeks of growing season left in Wyoming 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 04/11 and you're betting against frost in roughly 9 years out of 10. 05/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Wyoming compares
At roughly 165 frost-free days, Wyoming places 30,696 of 40,283 ZIP codes in this dataset. Within IA, it ranks 535 of 1,042.
Learn more
zone vs. frost date covers why Zone 5a and Wyoming's frost date answer different questions. the frost range covers how to read the range around Wyoming's dates instead of trusting one.