Clarksburg, TN 38387 Frost Dates
38387, near Clarksburg, TN: the frost window
The last spring frost here typically falls around 04/02, about 217 days from today. Fall's first freeze usually shows up around 10/31, roughly 211 days after the last spring frost.
Clarksburg sits in USDA Zone 7b (5 to 10°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Clarksburg'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 04/02 isn't a guarantee
04/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/16 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.
Clarksburg against the rest of the dataset
At roughly 211 frost-free days, Clarksburg places 14,867 of 40,283 ZIP codes in this dataset. Within TN, it ranks 311 of 770.
Learn more
Two guides worth reading on 38387: local microclimates, on what one yard in Clarksburg can differ from the 38387 normal, and zone vs. frost date, on why Zone 7b and Clarksburg's frost date answer different questions.