Rocky Top, TN 37769 Frost Dates
When can you plant in Rocky Top, TN?
Around 03/31 is the usual last spring frost, about 215 days away. The first fall frost typically arrives around 11/04, about 218 frost-free days later.
Rocky Top 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
About 10 weeks of growing season left in Rocky Top before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Rocky Top's last frost
03/31 is the middle of 30 years of NOAA records, not a promise. Plant by 03/11 and you're betting against frost in roughly 9 years out of 10. 04/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Rocky Top compares
At roughly 218 frost-free days, Rocky Top places 13,286 of 40,283 ZIP codes in this dataset. Within TN, it ranks 170 of 770.
Learn more
the frost range covers how to read the range around Rocky Top's dates instead of trusting one. local microclimates covers what one yard in Rocky Top can differ from the 37769 normal.