Sweetwater, TN 37874 Frost Dates
When can you plant in Sweetwater, TN?
The last spring frost here typically falls around 04/06, about 221 days from today. The first fall frost typically arrives around 10/31, about 208 frost-free days later.
The USDA Plant Hardiness Zone Map puts Sweetwater 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 Sweetwater before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/06 is the middle of 30 years of NOAA records, not a promise. Plant by 03/20 and you're betting against frost in roughly 9 years out of 10. 04/24 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Sweetwater compares
Sweetwater's growing season runs about 208 days, ranking 15,573 of 40,283 US ZIP codes measured here, longest to shortest. Within TN, it ranks 362 of 770.
Learn more
the frost range covers how to read the range around Sweetwater's dates instead of trusting one. local microclimates covers what one yard in Sweetwater can differ from the 37874 normal.