Alburnett, IA 52202 Frost Dates
Frost dates for Alburnett, IA, ZIP 52202
Typically, the last spring freeze lands around 04/28, roughly 243 days out. The first fall frost typically arrives around 10/12, about 166 frost-free days later.
Alburnett 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 Alburnett has about 6 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
04/28 is the middle of 30 years of NOAA records, not a promise. Plant by 04/14 and you're betting against frost in roughly 9 years out of 10. 05/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Alburnett compares
Alburnett's growing season runs about 166 days, ranking 30,425 of 40,283 US ZIP codes measured here, longest to shortest. Within IA, it ranks 468 of 1,042.
Learn more
local microclimates explains what one yard in Alburnett can differ from the 52202 normal, and zone vs. frost date explains why Zone 5a and Alburnett's frost date answer different questions.