Oliver Springs, TN 37845 Frost Dates
37845, near Oliver Springs, 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 11/04, roughly 218 days after the last spring frost.
Zone 7a (0 to 5°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Oliver Springs, not a forecast for this year.
Stretching the season past the first frost
Oliver Springs'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.
How much risk comes with planting early here
03/31 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/15 and only about 1 year in 10 sees frost after that.
Oliver Springs against the rest of the dataset
Oliver Springs's growing season runs about 218 days, ranking 13,269 of 40,283 US ZIP codes measured here, longest to shortest. Within TN, it ranks 168 of 770.
Learn more
Two guides worth reading on 37845: zone vs. frost date, on why Zone 7a and Oliver Springs's frost date answer different questions, and the frost range, on how to read the range around Oliver Springs's dates instead of trusting one.