Ridgeside, TN 37403 Frost Dates
37403, near Ridgeside, TN: the frost window
Typically, the last spring freeze lands around 03/31, roughly 215 days out. Fall's first freeze usually shows up around 11/06, roughly 219 days after the last spring frost.
Ridgeside sits in USDA Zone 8a (10 to 15°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
Ridgeside's growing season runs out in roughly 10 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
The actual range around Ridgeside's last frost
03/31 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/18 and only about 1 year in 10 sees frost after that.
Ridgeside against the rest of the dataset
At roughly 219 frost-free days, Ridgeside places 13,094 of 40,283 ZIP codes in this dataset. Within TN, it ranks 159 of 770.
Learn more
Two guides worth reading on 37403: the frost range, on how to read the range around Ridgeside's dates instead of trusting one, and local microclimates, on what one yard in Ridgeside can differ from the 37403 normal.