Granger, MO 63432 Frost Dates
Frost dates for Granger, MO, ZIP 63432
Typically, the last spring freeze lands around 04/23, roughly 238 days out. The first fall frost typically arrives around 10/17, about 176 frost-free days later.
The USDA Plant Hardiness Zone Map puts Granger in Zone 6a (-10 to -5°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 6a around Granger 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
04/23 is the middle of 30 years of NOAA records, not a promise. Plant by 04/08 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Granger compares
At roughly 176 frost-free days, Granger places 26,689 of 40,283 ZIP codes in this dataset. Within MO, it ranks 1,069 of 1,129.
Learn more
zone vs. frost date explains why Zone 6a and Granger's frost date answer different questions, and the frost range explains how to read the range around Granger's dates instead of trusting one.