Brewster, KS 67732 Frost Dates
67732, near Brewster, KS: the frost window
Typically, the last spring freeze lands around 05/02, roughly 247 days out. Fall's first freeze usually shows up around 10/11, roughly 158 days after the last spring frost.
Zone 6a (-10 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 Brewster, not a forecast for this year.
Stretching the season past the first frost
Brewster's growing season runs out in roughly 6 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 05/02 isn't a guarantee
05/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/19 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/16 and only about 1 year in 10 sees frost after that.
Brewster against the rest of the dataset
About 158 days separate Brewster's last and first frost, putting it 33,136 of 40,283 ZIP codes nationally. Within KS, it ranks 737 of 745.
Learn more
Two guides worth reading on 67732: local microclimates, on what one yard in Brewster can differ from the 67732 normal, and zone vs. frost date, on why Zone 6a and Brewster's frost date answer different questions.