McMinnville, TN 37378 Frost Dates
Frost dates for McMinnville, TN, ZIP 37378
Around 04/07 is the usual last spring frost, about 222 days away. The first fall frost typically arrives around 10/30, about 203 frost-free days later.
McMinnville 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 McMinnville 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 McMinnville's last frost
04/07 is the middle of 30 years of NOAA records, not a promise. Plant by 03/20 and you're betting against frost in roughly 9 years out of 10. 04/23 is the safer bet, historically only a 1-in-10 chance of frost that late.
How McMinnville compares
About 203 days separate McMinnville's last and first frost, putting it 16,864 of 40,283 ZIP codes nationally. Within TN, it ranks 496 of 770.
Learn more
zone vs. frost date explains why Zone 7b and McMinnville's frost date answer different questions, and the frost range explains how to read the range around McMinnville's dates instead of trusting one.