Minburn, IA 50167 Frost Dates
Frost dates for Minburn, IA, ZIP 50167
The last spring frost here typically falls around 04/19, about 234 days from today. The first fall frost typically arrives around 10/18, about 179 frost-free days later.
The USDA Plant Hardiness Zone Map puts Minburn in Zone 5a (-20 to -15°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 5a around Minburn 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.
The actual range around Minburn's last frost
04/19 is the middle of 30 years of NOAA records, not a promise. Plant by 04/05 and you're betting against frost in roughly 9 years out of 10. 05/03 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Minburn compares
Minburn's growing season runs about 179 days, ranking 25,478 of 40,283 US ZIP codes measured here, longest to shortest. Within IA, it ranks 108 of 1,042.
Learn more
the frost range explains how to read the range around Minburn's dates instead of trusting one, and local microclimates explains what one yard in Minburn can differ from the 50167 normal.