Frost Dates for 37847 — Pioneer, Tennessee

Half of springs at Newcomb, TN see their last 32°F night by April 18; only one in ten is past it by April 3, and one in ten still has one after May 3. Planting tender crops after April 25 leaves a 30% risk of a frost on them, after April 29 20%, and after May 3 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 78% of the 144 Tennessee stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 24 in half of years, as early as October 11 one year in ten, and holds off past November 4 one year in ten. A hard freeze of 28°F follows 8 days later, around November 1; in spring the one-in-ten date for 28°F is April 20, 13 days before the 32°F one. The freeze-free season lasts 187 days in a typical year, shorter than at 87% of the 144 Tennessee stations; it reaches 207 days one year in ten and falls short of 169 one year in ten. On average 107 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 30, and return around October 15. Severe cold of 16°F or below comes every winter, usually between December 12 and February 20.

July is the warmest month at Newcomb, TN, averaging 86°F by day and 64°F at night; January is the coldest at 46°F and 26°F. A freezing night is all but certain in every month from November to April (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 15% of years.

Warmth for growing adds up to 3,831 growing degree days a year (base 50°F), fewer than at 87% of the 144 Tennessee stations. 37% of them (1,432) have built up by the end of June, and July adds the most, 784. Precipitation totals 54.6 inches a year, most in July (5.8") and least in October (2.8"); May to September bring 42% of it.

The nearest other station, Oneida, TN, 15 miles west of Pioneer and 426 feet higher, has a last frost 5 days later (April 23), a first frost 6 days earlier (October 18), a season 10 days shorter.

The first measurable snow (0.1 inch or more) in Pioneer usually arrives around January 10, and the last of the season around February 18. Those are the middle dates across the winters of 1991–2020 at Oneida, TN, 14.9 miles away: half of years saw snow earlier, half later. Snow fell in 64% of those winters. The last 32°F night of spring typically comes 59 days after the last snow.

ZIP 37847 is 10 miles from Newcomb, TN, which stands at 1,014 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 37847 in zone 7a, the band where the coldest night of the year averaged 0 to 5°F (-17.8 to -15.0°C) over 1991–2020; a zone describes winter lows, not frost dates.