Brewster, KS 67733 Frost Dates
Frost dates for Brewster, KS, ZIP 67733
The last spring frost here typically falls around 05/02, about 247 days from today. The first fall frost typically arrives around 10/11, about 158 frost-free days later.
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.
What to do before the first frost
Zone 6a around Brewster has about 6 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.
Why 05/02 isn't a guarantee
05/02 is the middle of 30 years of NOAA records, not a promise. Plant by 04/19 and you're betting against frost in roughly 9 years out of 10. 05/16 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Brewster compares
Brewster's growing season runs about 158 days, ranking 33,137 of 40,283 US ZIP codes measured here, longest to shortest. Within KS, it ranks 738 of 745.
Learn more
local microclimates explains what one yard in Brewster can differ from the 67733 normal, and zone vs. frost date explains why Zone 6a and Brewster's frost date answer different questions.