Buffalo, MO 65590 Frost Dates
Frost dates for Buffalo, MO, ZIP 65590
Typically, the last spring freeze lands around 04/23, roughly 238 days out. The first fall frost typically arrives around 10/15, about 175 frost-free days later.
The USDA Plant Hardiness Zone Map puts Buffalo 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 Buffalo 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.
Why 04/23 isn't a guarantee
04/23 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. 05/08 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Buffalo compares
At roughly 175 frost-free days, Buffalo places 26,917 of 40,283 ZIP codes in this dataset. Within MO, it ranks 1,070 of 1,129.
Learn more
zone vs. frost date explains why Zone 6b and Buffalo's frost date answer different questions, and the frost range explains how to read the range around Buffalo's dates instead of trusting one.