Viola, TN 37394 Frost Dates
37394, near Viola, TN: the frost window
Typically, the last spring freeze lands around 04/07, roughly 222 days out. Fall's first freeze usually shows up around 10/30, roughly 203 days after the last spring frost.
Zone 7b (5 to 10°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 Viola, not a forecast for this year.
Stretching the season past the first frost
Viola'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.
The actual range around Viola's last frost
04/07 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 03/20 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/23 and only about 1 year in 10 sees frost after that.
Viola against the rest of the dataset
Viola's growing season runs about 203 days, ranking 17,063 of 40,283 US ZIP codes measured here, longest to shortest. Within TN, it ranks 525 of 770.
Learn more
Two guides worth reading on 37394: local microclimates, on what one yard in Viola can differ from the 37394 normal, and zone vs. frost date, on why Zone 7b and Viola's frost date answer different questions.