Burlington, KS 66839 Frost Dates
Frost dates for Burlington, KS, ZIP 66839
Typically, the last spring freeze lands around 04/11, roughly 226 days out. The first fall frost typically arrives around 10/26, about 199 frost-free days later.
The USDA Plant Hardiness Zone Map puts Burlington in Zone 6b (-5 to 0°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 6b around Burlington has about 8 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.
The actual range around Burlington's last frost
04/11 is the middle of 30 years of NOAA records, not a promise. Plant by 03/27 and you're betting against frost in roughly 9 years out of 10. 04/28 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Burlington compares
At roughly 199 frost-free days, Burlington places 18,127 of 40,283 ZIP codes in this dataset. Within KS, it ranks 152 of 745.
Learn more
the frost range explains how to read the range around Burlington's dates instead of trusting one, and local microclimates explains what one yard in Burlington can differ from the 66839 normal.