Clemons, IA 50051 Frost Dates
When can you plant in Clemons, IA?
The last spring frost here typically falls around 04/30, about 245 days from today. The first fall frost typically arrives around 10/06, about 159 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 Clemons, not a forecast for this year.
What to do before the first frost
About 6 weeks of growing season left in Clemons before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Clemons's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/15 and you're betting against frost in roughly 9 years out of 10. 05/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Clemons compares
Clemons's growing season runs about 159 days, ranking 32,796 of 40,283 US ZIP codes measured here, longest to shortest. Within IA, it ranks 807 of 1,042.
Learn more
zone vs. frost date covers why Zone 5a and Clemons's frost date answer different questions. the frost range covers how to read the range around Clemons's dates instead of trusting one.