Collegedale, TN 37315 Frost Dates
When can you plant in Collegedale, TN?
Around 03/24 is the usual last spring frost, about 208 days away. The first fall frost typically arrives around 11/09, about 230 frost-free days later.
Collegedale sits in USDA Zone 8a (10 to 15°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
About 10 weeks of growing season left in Collegedale before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/24 isn't a guarantee
03/24 is the middle of 30 years of NOAA records, not a promise. Plant by 03/06 and you're betting against frost in roughly 9 years out of 10. 04/08 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Collegedale compares
About 230 days separate Collegedale's last and first frost, putting it 10,353 of 40,283 ZIP codes nationally. Within TN, it ranks 72 of 770.
Learn more
local microclimates covers what one yard in Collegedale can differ from the 37315 normal. zone vs. frost date covers why Zone 8a and Collegedale's frost date answer different questions.