Gilliam, MO 65330 Frost Dates
Frost dates for Gilliam, MO, ZIP 65330
Around 04/10 is the usual last spring frost, about 225 days away. The first fall frost typically arrives around 10/24, about 196 frost-free days later.
Gilliam sits in USDA Zone 6b (-5 to 0°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
Zone 6b around Gilliam 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 03/27 and you're betting against frost in roughly 9 years out of 10. 04/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Gilliam compares
At roughly 196 frost-free days, Gilliam places 19,096 of 40,283 ZIP codes in this dataset. Within MO, it ranks 591 of 1,129.
Learn more
local microclimates explains what one yard in Gilliam can differ from the 65330 normal, and zone vs. frost date explains why Zone 6b and Gilliam's frost date answer different questions.