Bluff City, TN 37686 Frost Dates
Bluff City, TN: when does the frost end?
Typically, the last spring freeze lands around 04/16, roughly 231 days out. Fall's first freeze usually shows up around 10/24, roughly 190 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Bluff City 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
With roughly 8 weeks until Bluff City's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Bluff City's last frost
04/16 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/05 and only about 1 year in 10 sees frost after that.
Bluff City against the rest of the dataset
At roughly 190 frost-free days, Bluff City places 21,202 of 40,283 ZIP codes in this dataset. Within TN, it ranks 664 of 770.
Learn more
Before leaning on 37686's figures: the frost range explains how to read the range around Bluff City's dates instead of trusting one, while local microclimates explains what one yard in Bluff City can differ from the 37686 normal.