North Buena Vista, IA 52066 Frost Dates
Frost dates for North Buena Vista, IA, ZIP 52066
Typically, the last spring freeze lands around 04/21, roughly 236 days out. The first fall frost typically arrives around 10/18, about 178 frost-free days later.
North Buena Vista 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
Zone 5a around North Buena Vista has about 7 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
04/21 is the middle of 30 years of NOAA records, not a promise. Plant by 04/07 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How North Buena Vista compares
At roughly 178 frost-free days, North Buena Vista places 25,939 of 40,283 ZIP codes in this dataset. Within IA, it ranks 122 of 1,042.
Learn more
the frost range explains how to read the range around North Buena Vista's dates instead of trusting one, and local microclimates explains what one yard in North Buena Vista can differ from the 52066 normal.