Jasper, TN 37347 Frost Dates
37347, near Jasper, TN: the frost window
The last spring frost here typically falls around 04/07, about 222 days from today. Fall's first freeze usually shows up around 10/31, roughly 208 days after the last spring frost.
Zone 8a (10 to 15°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Jasper, not a forecast for this year.
Stretching the season past the first frost
Jasper'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 04/07 isn't a guarantee
04/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/18 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/28 and only about 1 year in 10 sees frost after that.
Jasper against the rest of the dataset
About 208 days separate Jasper's last and first frost, putting it 15,604 of 40,283 ZIP codes nationally. Within TN, it ranks 367 of 770.
Learn more
Two guides worth reading on 37347: zone vs. frost date, on why Zone 8a and Jasper's frost date answer different questions, and the frost range, on how to read the range around Jasper's dates instead of trusting one.