Herndon, KS 67739 Frost Dates
When can you plant in Herndon, KS?
Typically, the last spring freeze lands around 04/30, roughly 245 days out. The first fall frost typically arrives around 10/11, about 163 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 Herndon, not a forecast for this year.
What to do before the first frost
About 6 weeks of growing season left in Herndon before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Herndon's last frost
04/30 is the middle of 30 years of NOAA records, not a promise. Plant by 04/16 and you're betting against frost in roughly 9 years out of 10. 05/14 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Herndon compares
About 163 days separate Herndon's last and first frost, putting it 31,550 of 40,283 ZIP codes nationally. Within KS, it ranks 716 of 745.
Learn more
zone vs. frost date covers why Zone 6a and Herndon's frost date answer different questions. the frost range covers how to read the range around Herndon's dates instead of trusting one.