Davenport, IA 61204 Frost Dates
Frost dates for Davenport, IA, ZIP 61204
Around 04/21 is the usual last spring frost, about 236 days away. The first fall frost typically arrives around 10/17, about 176 frost-free days later.
The USDA Plant Hardiness Zone Map puts Davenport in Zone 5b (-15 to -10°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 5b around Davenport 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. 05/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Davenport compares
At roughly 176 frost-free days, Davenport places 26,334 of 40,283 ZIP codes in this dataset. Within IA, it ranks 133 of 1,042.
Learn more
local microclimates explains what one yard in Davenport can differ from the 61204 normal, and zone vs. frost date explains why Zone 5b and Davenport's frost date answer different questions.