Columbia, TN 38401 Frost Dates
Frost dates for Columbia, TN, ZIP 38401
Around 04/10 is the usual last spring frost, about 225 days away. The first fall frost typically arrives around 10/27, about 199 frost-free days later.
Columbia sits in USDA Zone 7b (5 to 10°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 7b around Columbia has about 9 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 Columbia's last frost
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. 04/26 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Columbia compares
About 199 days separate Columbia's last and first frost, putting it 18,017 of 40,283 ZIP codes nationally. Within TN, it ranks 552 of 770.
Learn more
the frost range explains how to read the range around Columbia's dates instead of trusting one, and local microclimates explains what one yard in Columbia can differ from the 38401 normal.