Frost Dates for 37217 — Nashville, Tennessee

Half of springs at Nashville Berry Field, TN see their last 32°F night by April 4; only one in ten is past it by March 19, and one in ten still has one after April 21. Planting tender crops after April 10 leaves a 30% risk of a frost on them, after April 15 20%, and after April 21 10%. The 17 days between the even-odds date and the one-in-ten date is narrower than at 34% of the 144 Tennessee stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 31 in half of years, as early as October 20 one year in ten, and holds off past November 14 one year in ten. A hard freeze of 28°F follows 9 days later, around November 9; in spring the one-in-ten date for 28°F is April 8, 13 days before the 32°F one. The freeze-free season lasts 209 days in a typical year, longer than at 67% of the 144 Tennessee stations; it reaches 230 days one year in ten and falls short of 189 one year in ten. On average 68 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 12 days longer, to about April 16, and return around October 23. Severe cold of 16°F or below comes in 99% of winters, usually between December 20 and February 16.

July is the warmest month at Nashville Berry Field, TN, averaging 91°F by day and 70°F at night; January is the coldest at 48°F and 29°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 61% of years.

Warmth for growing adds up to 4,915 growing degree days a year (base 50°F), more than at 89% of the 144 Tennessee stations. 38% of them (1,880) have built up by the end of June, and July adds the most, 936. Precipitation totals 50.7 inches a year, most in May (5.1") and least in October (3.3"); May to September bring 42% of it.

The nearest other station, Nashville International Airport, TN, 2 miles northwest of Nashville, has a last frost 4 days earlier (March 31), a first frost 3 days later (November 3), a season 8 days longer.

The first measurable snow (0.1 inch or more) in Nashville usually arrives around December 29, and the last of the season around February 25. Those are the middle dates across the winters of 1991–2020 at Nashville International Airport, TN, 1.7 miles away: half of years saw snow earlier, half later. Every one of those winters saw snow. The last 32°F night of spring typically comes 38 days after the last snow.

ZIP 37217 is 1 mile from Nashville Berry Field, TN, which stands at 560 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 37013 (Antioch). The 2023 USDA Plant Hardiness Zone Map lists ZIP 37217 in zone 7b, the band where the coldest night of the year averaged 5 to 10°F (-15.0 to -12.2°C) over 1991–2020; a zone describes winter lows, not frost dates.