Bloomsdale, MO 63627 Frost Dates
Frost dates for Bloomsdale, MO, ZIP 63627
Typically, the last spring freeze lands around 04/09, roughly 224 days out. The first fall frost typically arrives around 10/26, about 197 frost-free days later.
Zone 6b (-5 to 0°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Bloomsdale, not a forecast for this year.
What to do before the first frost
Zone 6b around Bloomsdale 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.
The actual range around Bloomsdale's last frost
04/09 is the middle of 30 years of NOAA records, not a promise. Plant by 03/25 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 Bloomsdale compares
Bloomsdale's growing season runs about 197 days, ranking 18,750 of 40,283 US ZIP codes measured here, longest to shortest. Within MO, it ranks 551 of 1,129.
Learn more
local microclimates explains what one yard in Bloomsdale can differ from the 63627 normal, and zone vs. frost date explains why Zone 6b and Bloomsdale's frost date answer different questions.