Germantown, TN 38125 Frost Dates
38125, near Germantown, TN: the frost window
Around 03/22 is the usual last spring frost, about 206 days away. Fall's first freeze usually shows up around 11/07, roughly 230 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Germantown in Zone 8a (10 to 15°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
Germantown'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 Germantown's last frost
03/22 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/05 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/09 and only about 1 year in 10 sees frost after that.
Germantown against the rest of the dataset
At roughly 230 frost-free days, Germantown places 10,314 of 40,283 ZIP codes in this dataset. Within TN, it ranks 59 of 770.
Learn more
Two guides worth reading on 38125: zone vs. frost date, on why Zone 8a and Germantown's frost date answer different questions, and the frost range, on how to read the range around Germantown's dates instead of trusting one.