Frost Dates for 38478 — Pulaski, Tennessee

Half of springs at Pulaski Wwtp, TN see their last 32°F night by April 14; only one in ten is past it by March 29, and one in ten still has one after April 28. Planting tender crops after April 20 leaves a 30% risk of a frost on them, after April 24 20%, and after April 28 10%. The 14 days between the even-odds date and the one-in-ten date is narrower than at 95% 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 12 one year in ten, and holds off past November 5 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 19, 9 days before the 32°F one. The freeze-free season lasts 193 days in a typical year, shorter than at 74% of the 144 Tennessee stations; it reaches 214 days one year in ten and falls short of 174 one year in ten. On average 90 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 26, and return around October 15. Severe cold of 16°F or below comes every winter, usually between December 7 and February 19.

July is the warmest month at Pulaski Wwtp, TN, averaging 88°F by day and 66°F at night; January is the coldest at 48°F and 25°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 83% of years.

Warmth for growing adds up to 4,152 growing degree days a year (base 50°F), fewer than at 72% of the 144 Tennessee stations. 37% of them (1,551) have built up by the end of June, and July adds the most, 831. Precipitation totals 58.7 inches a year, most in December (6.3") and least in October (3.8"); May to September bring 39% of it.

The nearest other station, Ardmore, TN, 17 miles southeast of Pulaski and 241 feet higher, has a last frost 15 days earlier (March 30), a first frost 11 days later (November 4), a season 30 days longer.

The first measurable snow (0.1 inch or more) in Pulaski usually arrives around January 17, and the last of the season around February 10. Those are the middle dates across the winters of 1991–2020 at Pulaski Wwtp, TN, 2.2 miles away: half of years saw snow earlier, half later. Snow fell in 72% of those winters. The last 32°F night of spring typically comes 63 days after the last snow.

ZIP 38478 is 2 miles from Pulaski Wwtp, TN, which stands at 644 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 38478 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.