Jacksboro, TN 37847 Frost Dates
37847, near Jacksboro, TN: the frost window
Typically, the last spring freeze lands around 04/18, roughly 233 days out. Fall's first freeze usually shows up around 10/24, roughly 187 days after the last spring frost.
Zone 7a (0 to 5°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 Jacksboro, not a forecast for this year.
Stretching the season past the first frost
Jacksboro'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 04/18 isn't a guarantee
04/18 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/03 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.
Jacksboro against the rest of the dataset
Jacksboro's growing season runs about 187 days, ranking 22,404 of 40,283 US ZIP codes measured here, longest to shortest. Within TN, it ranks 697 of 770.
Learn more
Two guides worth reading on 37847: the frost range, on how to read the range around Jacksboro's dates instead of trusting one, and local microclimates, on what one yard in Jacksboro can differ from the 37847 normal.