Kirkwood, MO 63122 Frost Dates
Frost dates for Kirkwood, MO, ZIP 63122
The last spring frost here typically falls around 04/01, about 216 days from today. The first fall frost typically arrives around 11/04, about 218 frost-free days later.
Zone 7a (0 to 5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Kirkwood, not a forecast for this year.
What to do before the first frost
Zone 7a around Kirkwood has about 10 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
04/01 is the middle of 30 years of NOAA records, not a promise. Plant by 03/14 and you're betting against frost in roughly 9 years out of 10. 04/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Kirkwood compares
At roughly 218 frost-free days, Kirkwood places 13,207 of 40,283 ZIP codes in this dataset. Within MO, it ranks 74 of 1,129.
Learn more
local microclimates explains what one yard in Kirkwood can differ from the 63122 normal, and zone vs. frost date explains why Zone 7a and Kirkwood's frost date answer different questions.