Columbus, TX 77475 Frost Dates
Frost dates for Columbus, TX, ZIP 77475
Around 03/09 is the usual last spring frost, about 193 days away. The first fall frost typically arrives around 11/20, about 255 frost-free days later.
The USDA Plant Hardiness Zone Map puts Columbus in Zone 9a (20 to 25°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 9a around Columbus has about 12 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 03/09 isn't a guarantee
03/09 is the middle of 30 years of NOAA records, not a promise. Plant by 02/13 and you're betting against frost in roughly 9 years out of 10. 03/31 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Columbus compares
At roughly 255 frost-free days, Columbus places 6,928 of 40,283 ZIP codes in this dataset. Within TX, it ranks 1,501 of 2,558.
Learn more
local microclimates explains what one yard in Columbus can differ from the 77475 normal, and zone vs. frost date explains why Zone 9a and Columbus's frost date answer different questions.