West Okoboji, IA 51351 Frost Dates
When can you plant in West Okoboji, IA?
Typically, the last spring freeze lands around 05/01, roughly 246 days out. The first fall frost typically arrives around 10/06, about 158 frost-free days later.
West Okoboji 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 6 weeks of growing season left in West Okoboji before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around West Okoboji's last frost
05/01 is the middle of 30 years of NOAA records, not a promise. Plant by 04/17 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 West Okoboji compares
About 158 days separate West Okoboji's last and first frost, putting it 33,131 of 40,283 ZIP codes nationally. Within IA, it ranks 822 of 1,042.
Learn more
the frost range covers how to read the range around West Okoboji's dates instead of trusting one. local microclimates covers what one yard in West Okoboji can differ from the 51351 normal.