Keyesport, IL 62253 Frost Dates
62253, near Keyesport, IL: the frost window
Around 04/06 is the usual last spring frost, about 221 days away. Fall's first freeze usually shows up around 10/29, roughly 204 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Keyesport in Zone 6b (-5 to 0°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Keyesport's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/23 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/22 and only about 1 year in 10 sees frost after that.
Keyesport against the rest of the dataset
At roughly 204 frost-free days, Keyesport places 16,733 of 40,283 ZIP codes in this dataset. Within IL, it ranks 139 of 1,548.
Learn more
Two guides worth reading on 62253: local microclimates, on what one yard in Keyesport can differ from the 62253 normal, and zone vs. frost date, on why Zone 6b and Keyesport's frost date answer different questions.