Hartsville/Trousdale County, TN 37057 Frost Dates
37057, near Hartsville/Trousdale County, TN: the frost window
Typically, the last spring freeze lands around 04/03, roughly 218 days out. Fall's first freeze usually shows up around 11/01, roughly 213 days after the last spring frost.
Zone 7b (5 to 10°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 Hartsville/Trousdale County, not a forecast for this year.
Stretching the season past the first frost
Hartsville/Trousdale County'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.
How much risk comes with planting early here
04/03 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 04/21 and only about 1 year in 10 sees frost after that.
Hartsville/Trousdale County against the rest of the dataset
Hartsville/Trousdale County's growing season runs about 213 days, ranking 14,471 of 40,283 US ZIP codes measured here, longest to shortest. Within TN, it ranks 273 of 770.
Learn more
Two guides worth reading on 37057: the frost range, on how to read the range around Hartsville/Trousdale County's dates instead of trusting one, and local microclimates, on what one yard in Hartsville/Trousdale County can differ from the 37057 normal.