Powells Crossroads, TN 37397 Frost Dates
37397, near Powells Crossroads, TN: the frost window
Typically, the last spring freeze lands around 03/26, roughly 210 days out. Fall's first freeze usually shows up around 11/08, roughly 228 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Powells Crossroads 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
Powells Crossroads'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.
The actual range around Powells Crossroads's last frost
03/26 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/13 and only about 1 year in 10 sees frost after that.
Powells Crossroads against the rest of the dataset
At roughly 228 frost-free days, Powells Crossroads places 10,869 of 40,283 ZIP codes in this dataset. Within TN, it ranks 83 of 770.
Learn more
Two guides worth reading on 37397: the frost range, on how to read the range around Powells Crossroads's dates instead of trusting one, and local microclimates, on what one yard in Powells Crossroads can differ from the 37397 normal.