Maryville, TN 37878 Frost Dates
When can you plant in Maryville, TN?
Typically, the last spring freeze lands around 04/20, roughly 235 days out. The first fall frost typically arrives around 10/22, about 185 frost-free days later.
Maryville 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.
What to do before the first frost
About 8 weeks of growing season left in Maryville before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Maryville's last frost
04/20 is the middle of 30 years of NOAA records, not a promise. Plant by 04/01 and you're betting against frost in roughly 9 years out of 10. 05/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Maryville compares
At roughly 185 frost-free days, Maryville places 23,069 of 40,283 ZIP codes in this dataset. Within TN, it ranks 713 of 770.
Learn more
local microclimates covers what one yard in Maryville can differ from the 37878 normal. zone vs. frost date covers why Zone 7b and Maryville's frost date answer different questions.