Spring City, TN 37337 Frost Dates
Frost dates for Spring City, TN, ZIP 37337
Around 04/08 is the usual last spring frost, about 223 days away. The first fall frost typically arrives around 10/31, about 203 frost-free days later.
Spring City sits in USDA Zone 7a (0 to 5°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
Zone 7a around Spring City has about 9 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
Why 04/08 isn't a guarantee
04/08 is the middle of 30 years of NOAA records, not a promise. Plant by 03/22 and you're betting against frost in roughly 9 years out of 10. 04/26 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Spring City compares
At roughly 203 frost-free days, Spring City places 16,940 of 40,283 ZIP codes in this dataset. Within TN, it ranks 506 of 770.
Learn more
the frost range explains how to read the range around Spring City's dates instead of trusting one, and local microclimates explains what one yard in Spring City can differ from the 37337 normal.