Clermont, IA 52135 Frost Dates
When can you plant in Clermont, IA?
The last spring frost here typically falls around 05/04, about 249 days from today. The first fall frost typically arrives around 10/04, about 151 frost-free days later.
Clermont sits in USDA Zone 5a (-20 to -15°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 5 weeks of growing season left in Clermont before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Clermont's last frost
05/04 is the middle of 30 years of NOAA records, not a promise. Plant by 04/20 and you're betting against frost in roughly 9 years out of 10. 05/17 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Clermont compares
Clermont's growing season runs about 151 days, ranking 35,124 of 40,283 US ZIP codes measured here, longest to shortest. Within IA, it ranks 975 of 1,042.
Learn more
the frost range covers how to read the range around Clermont's dates instead of trusting one. local microclimates covers what one yard in Clermont can differ from the 52135 normal.