Dike, IA 50624 Frost Dates
Frost dates for Dike, IA, ZIP 50624
Around 04/29 is the usual last spring frost, about 244 days away. The first fall frost typically arrives around 10/09, about 160 frost-free days later.
The USDA Plant Hardiness Zone Map puts Dike 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 Dike 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.
Why 04/29 isn't a guarantee
04/29 is the middle of 30 years of NOAA records, not a promise. Plant by 04/15 and you're betting against frost in roughly 9 years out of 10. 05/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Dike compares
At roughly 160 frost-free days, Dike places 32,418 of 40,283 ZIP codes in this dataset. Within IA, it ranks 762 of 1,042.
Learn more
local microclimates explains what one yard in Dike can differ from the 50624 normal, and zone vs. frost date explains why Zone 5a and Dike's frost date answer different questions.