Wamego, KS 66547 Frost Dates
Frost dates for Wamego, KS, ZIP 66547
Around 04/18 is the usual last spring frost, about 233 days away. The first fall frost typically arrives around 10/19, about 183 frost-free days later.
The USDA Plant Hardiness Zone Map puts Wamego 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 Wamego has about 7 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.
How much risk comes with planting early here
04/18 is the middle of 30 years of NOAA records, not a promise. Plant by 04/04 and you're betting against frost in roughly 9 years out of 10. 05/02 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Wamego compares
About 183 days separate Wamego's last and first frost, putting it 23,847 of 40,283 ZIP codes nationally. Within KS, it ranks 436 of 745.
Learn more
zone vs. frost date explains why Zone 6b and Wamego's frost date answer different questions, and the frost range explains how to read the range around Wamego's dates instead of trusting one.