Williamsburg, KS 66095 Frost Dates
Frost dates for Williamsburg, KS, ZIP 66095
Around 04/18 is the usual last spring frost, about 233 days away. The first fall frost typically arrives around 10/20, about 183 frost-free days later.
Zone 6b (-5 to 0°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 Williamsburg, not a forecast for this year.
What to do before the first frost
Zone 6b around Williamsburg 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 Williamsburg's last frost
04/18 is the middle of 30 years of NOAA records, not a promise. Plant by 04/05 and you're betting against frost in roughly 9 years out of 10. 05/01 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Williamsburg compares
At roughly 183 frost-free days, Williamsburg places 24,000 of 40,283 ZIP codes in this dataset. Within KS, it ranks 455 of 745.
Learn more
local microclimates explains what one yard in Williamsburg can differ from the 66095 normal, and zone vs. frost date explains why Zone 6b and Williamsburg's frost date answer different questions.