Spring City, TN 37381 Frost Dates
37381, near Spring City, TN: the frost window
The last spring frost here typically falls around 04/08, about 223 days from today. Fall's first freeze usually shows up around 10/31, roughly 203 days after the last spring frost.
Spring City 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.
Stretching the season past the first frost
Spring City's growing season runs out in roughly 9 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/08 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/22 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/26 and only about 1 year in 10 sees frost after that.
Spring City against the rest of the dataset
At roughly 203 frost-free days, Spring City places 16,941 of 40,283 ZIP codes in this dataset. Within TN, it ranks 507 of 770.
Learn more
Two guides worth reading on 37381: zone vs. frost date, on why Zone 7b and Spring City's frost date answer different questions, and the frost range, on how to read the range around Spring City's dates instead of trusting one.