Mountain City, TN 37688 Frost Dates
Mountain City, TN: when does the frost end?
The last spring frost here typically falls around 04/27, about 242 days from today. Fall's first freeze usually shows up around 10/14, roughly 170 days after the last spring frost.
Mountain City sits in USDA Zone 7a (0 to 5°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
With roughly 7 weeks until Mountain City's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 04/27 isn't a guarantee
04/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/15 and only about 1 year in 10 sees frost after that.
Mountain City against the rest of the dataset
Mountain City's growing season runs about 170 days, ranking 29,039 of 40,283 US ZIP codes measured here, longest to shortest. Within TN, it ranks 766 of 770.
Learn more
Before leaning on 37688's figures: local microclimates explains what one yard in Mountain City can differ from the 37688 normal, while zone vs. frost date explains why Zone 7a and Mountain City's frost date answer different questions.