Watertown, TN 37184 Frost Dates
Frost dates for Watertown, TN, ZIP 37184
Around 04/10 is the usual last spring frost, about 225 days away. The first fall frost typically arrives around 10/29, about 201 frost-free days later.
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 Watertown, not a forecast for this year.
What to do before the first frost
Zone 7b around Watertown has about 9 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Watertown's last frost
04/10 is the middle of 30 years of NOAA records, not a promise. Plant by 03/26 and you're betting against frost in roughly 9 years out of 10. 04/27 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Watertown compares
Watertown's growing season runs about 201 days, ranking 17,543 of 40,283 US ZIP codes measured here, longest to shortest. Within TN, it ranks 543 of 770.
Learn more
the frost range explains how to read the range around Watertown's dates instead of trusting one, and local microclimates explains what one yard in Watertown can differ from the 37184 normal.