Germantown, TN 38115 Frost Dates
Frost dates for Germantown, TN, ZIP 38115
Typically, the last spring freeze lands around 03/29, roughly 213 days out. The first fall frost typically arrives around 11/05, about 223 frost-free days later.
Germantown 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.
What to do before the first frost
Zone 8a around Germantown has about 10 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.
How much risk comes with planting early here
03/29 is the middle of 30 years of NOAA records, not a promise. Plant by 03/09 and you're betting against frost in roughly 9 years out of 10. 04/13 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Germantown compares
Germantown's growing season runs about 223 days, ranking 12,017 of 40,283 US ZIP codes measured here, longest to shortest. Within TN, it ranks 98 of 770.
Learn more
the frost range explains how to read the range around Germantown's dates instead of trusting one, and local microclimates explains what one yard in Germantown can differ from the 38115 normal.