Red Bank, TN 37405 Frost Dates
37405, near Red Bank, TN: the frost window
The last spring frost here typically falls around 03/31, about 215 days from today. Fall's first freeze usually shows up around 11/06, roughly 219 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Red Bank in Zone 7b (5 to 10°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
Red Bank's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
Why 03/31 isn't a guarantee
03/31 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/18 and only about 1 year in 10 sees frost after that.
Red Bank against the rest of the dataset
Red Bank's growing season runs about 219 days, ranking 12,988 of 40,283 US ZIP codes measured here, longest to shortest. Within TN, it ranks 141 of 770.
Learn more
Two guides worth reading on 37405: local microclimates, on what one yard in Red Bank can differ from the 37405 normal, and zone vs. frost date, on why Zone 7b and Red Bank's frost date answer different questions.