Trimble, TN 38259 Frost Dates
When can you plant in Trimble, TN?
Around 03/28 is the usual last spring frost, about 212 days away. The first fall frost typically arrives around 11/02, about 221 frost-free days later.
The USDA Plant Hardiness Zone Map puts Trimble in Zone 7b (5 to 10°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 9 weeks of growing season left in Trimble before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
Why 03/28 isn't a guarantee
03/28 is the middle of 30 years of NOAA records, not a promise. Plant by 03/10 and you're betting against frost in roughly 9 years out of 10. 04/15 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Trimble compares
At roughly 221 frost-free days, Trimble places 12,568 of 40,283 ZIP codes in this dataset. Within TN, it ranks 127 of 770.
Learn more
local microclimates covers what one yard in Trimble can differ from the 38259 normal. zone vs. frost date covers why Zone 7b and Trimble's frost date answer different questions.