Jamestown, TN 38589 Frost Dates
Jamestown, TN: when does the frost end?
Typically, the last spring freeze lands around 04/20, roughly 235 days out. Fall's first freeze usually shows up around 10/22, roughly 183 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 Jamestown, not a forecast for this year.
Stretching the season past the first frost
With roughly 8 weeks until Jamestown's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
04/20 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/06 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/08 and only about 1 year in 10 sees frost after that.
Jamestown against the rest of the dataset
About 183 days separate Jamestown's last and first frost, putting it 23,875 of 40,283 ZIP codes nationally. Within TN, it ranks 727 of 770.
Learn more
Before leaning on 38589's figures: zone vs. frost date explains why Zone 7a and Jamestown's frost date answer different questions, while the frost range explains how to read the range around Jamestown's dates instead of trusting one.