Galesburg, KS 66740 Frost Dates
66740, near Galesburg, KS: the frost window
Around 04/11 is the usual last spring frost, about 226 days away. Fall's first freeze usually shows up around 10/26, roughly 196 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Galesburg in Zone 7a (0 to 5°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
Galesburg's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Galesburg's last frost
04/11 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/27 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/26 and only about 1 year in 10 sees frost after that.
Galesburg against the rest of the dataset
At roughly 196 frost-free days, Galesburg places 19,111 of 40,283 ZIP codes in this dataset. Within KS, it ranks 212 of 745.
Learn more
Two guides worth reading on 66740: the frost range, on how to read the range around Galesburg's dates instead of trusting one, and local microclimates, on what one yard in Galesburg can differ from the 66740 normal.