Wartburg, TN 37770 Frost Dates
When can you plant in Wartburg, TN?
Around 04/21 is the usual last spring frost, about 236 days away. The first fall frost typically arrives around 10/17, about 177 frost-free days later.
The USDA Plant Hardiness Zone Map puts Wartburg in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 7 weeks of growing season left in Wartburg before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Wartburg's last frost
04/21 is the middle of 30 years of NOAA records, not a promise. Plant by 04/04 and you're betting against frost in roughly 9 years out of 10. 05/12 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Wartburg compares
At roughly 177 frost-free days, Wartburg places 26,195 of 40,283 ZIP codes in this dataset. Within TN, it ranks 748 of 770.
Learn more
local microclimates covers what one yard in Wartburg can differ from the 37770 normal. zone vs. frost date covers why Zone 7a and Wartburg's frost date answer different questions.