Tusculum, TN 37641 Frost Dates
37641, near Tusculum, TN: the frost window
Typically, the last spring freeze lands around 04/14, roughly 229 days out. Fall's first freeze usually shows up around 10/24, roughly 192 days after the last spring frost.
Tusculum sits in USDA Zone 7a (0 to 5°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
Tusculum's growing season runs out in roughly 8 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 04/14 isn't a guarantee
04/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/31 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/03 and only about 1 year in 10 sees frost after that.
Tusculum against the rest of the dataset
About 192 days separate Tusculum's last and first frost, putting it 20,333 of 40,283 ZIP codes nationally. Within TN, it ranks 624 of 770.
Learn more
Two guides worth reading on 37641: zone vs. frost date, on why Zone 7a and Tusculum's frost date answer different questions, and the frost range, on how to read the range around Tusculum's dates instead of trusting one.