Westphalia, MO 65085 Frost Dates
Frost dates for Westphalia, MO, ZIP 65085
Typically, the last spring freeze lands around 04/10, roughly 225 days out. The first fall frost typically arrives around 10/26, about 198 frost-free days later.
The USDA Plant Hardiness Zone Map puts Westphalia 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 Westphalia 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.
Why 04/10 isn't a guarantee
04/10 is the middle of 30 years of NOAA records, not a promise. Plant by 03/26 and you're betting against frost in roughly 9 years out of 10. 04/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Westphalia compares
At roughly 198 frost-free days, Westphalia places 18,519 of 40,283 ZIP codes in this dataset. Within MO, it ranks 514 of 1,129.
Learn more
local microclimates explains what one yard in Westphalia can differ from the 65085 normal, and zone vs. frost date explains why Zone 6b and Westphalia's frost date answer different questions.