Mount Pleasant, IA 52641 Frost Dates
When can you plant in Mount Pleasant, IA?
Typically, the last spring freeze lands around 04/30, roughly 245 days out. The first fall frost typically arrives around 10/10, about 163 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 Mount Pleasant, not a forecast for this year.
What to do before the first frost
About 6 weeks of growing season left in Mount Pleasant before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Mount Pleasant's last frost
04/30 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 Mount Pleasant compares
About 163 days separate Mount Pleasant's last and first frost, putting it 31,359 of 40,283 ZIP codes nationally. Within IA, it ranks 661 of 1,042.
Learn more
zone vs. frost date covers why Zone 5b and Mount Pleasant's frost date answer different questions. the frost range covers how to read the range around Mount Pleasant's dates instead of trusting one.