Athens, TN 37303 Frost Dates
37303, near Athens, TN: the frost window
Typically, the last spring freeze lands around 04/06, roughly 221 days out. Fall's first freeze usually shows up around 10/31, roughly 208 days after the last spring frost.
Athens 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.
Stretching the season past the first frost
Athens's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/06 isn't a guarantee
04/06 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/24 and only about 1 year in 10 sees frost after that.
Athens against the rest of the dataset
At roughly 208 frost-free days, Athens places 15,540 of 40,283 ZIP codes in this dataset. Within TN, it ranks 354 of 770.
Learn more
Two guides worth reading on 37303: zone vs. frost date, on why Zone 7b and Athens's frost date answer different questions, and the frost range, on how to read the range around Athens's dates instead of trusting one.