Jefferson City, TN 37877 Frost Dates
Frost dates for Jefferson City, TN, ZIP 37877
Around 03/31 is the usual last spring frost, about 215 days away. The first fall frost typically arrives around 11/04, about 217 frost-free days later.
Jefferson City sits in USDA Zone 7b (5 to 10°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 7b around Jefferson City 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
03/31 is the middle of 30 years of NOAA records, not a promise. Plant by 03/14 and you're betting against frost in roughly 9 years out of 10. 04/18 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Jefferson City compares
At roughly 217 frost-free days, Jefferson City places 13,451 of 40,283 ZIP codes in this dataset. Within TN, it ranks 178 of 770.
Learn more
zone vs. frost date explains why Zone 7b and Jefferson City's frost date answer different questions, and the frost range explains how to read the range around Jefferson City's dates instead of trusting one.