Knoxville, TN 37995 Frost Dates
Knoxville, TN: when does the frost end?
Typically, the last spring freeze lands around 04/01, roughly 216 days out. Fall's first freeze usually shows up around 11/02, roughly 215 days after the last spring frost.
Knoxville 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
With roughly 9 weeks until Knoxville's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/01 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/14 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/17 and only about 1 year in 10 sees frost after that.
Knoxville against the rest of the dataset
About 215 days separate Knoxville's last and first frost, putting it 14,008 of 40,283 ZIP codes nationally. Within TN, it ranks 224 of 770.
Learn more
Before leaning on 37995's figures: zone vs. frost date explains why Zone 7b and Knoxville's frost date answer different questions, while the frost range explains how to read the range around Knoxville's dates instead of trusting one.