Louisville, TN 37777 Frost Dates
37777, near Louisville, TN: the frost window
The last spring frost here typically falls around 04/01, about 216 days from today. Fall's first freeze usually shows up around 11/02, roughly 215 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Louisville 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
Louisville'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 04/01 isn't a guarantee
04/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/17 and only about 1 year in 10 sees frost after that.
Louisville against the rest of the dataset
At roughly 215 frost-free days, Louisville places 14,084 of 40,283 ZIP codes in this dataset. Within TN, it ranks 235 of 770.
Learn more
Two guides worth reading on 37777: zone vs. frost date, on why Zone 7b and Louisville's frost date answer different questions, and the frost range, on how to read the range around Louisville's dates instead of trusting one.