Hornsby, TN 38044 Frost Dates
Frost dates for Hornsby, TN, ZIP 38044
Typically, the last spring freeze lands around 04/03, roughly 218 days out. The first fall frost typically arrives around 10/30, about 210 frost-free days later.
Hornsby 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 Hornsby 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.
How much risk comes with planting early here
04/03 is the middle of 30 years of NOAA records, not a promise. Plant by 03/17 and you're betting against frost in roughly 9 years out of 10. 04/19 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Hornsby compares
At roughly 210 frost-free days, Hornsby places 15,118 of 40,283 ZIP codes in this dataset. Within TN, it ranks 345 of 770.
Learn more
zone vs. frost date explains why Zone 7b and Hornsby's frost date answer different questions, and the frost range explains how to read the range around Hornsby's dates instead of trusting one.