Frost Dates for 37022 — Bethpage, Tennessee

Half of springs at Bethpage 1 S, TN see their last 32°F night by April 16; only one in ten is past it by March 31, and one in ten still has one after May 2. Planting tender crops after April 22 leaves a 30% risk of a frost on them, after April 27 20%, and after May 2 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 53% of the 144 Tennessee stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 23 in half of years, as early as October 10 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 October 31; in spring the one-in-ten date for 28°F is April 20, 12 days before the 32°F one. The freeze-free season lasts 189 days in a typical year, shorter than at 83% of the 144 Tennessee stations; it reaches 210 days one year in ten and falls short of 170 one year in ten. On average 101 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 28, and return around October 15. Severe cold of 16°F or below comes every winter, usually between December 8 and February 26.

July is the warmest month at Bethpage 1 S, TN, averaging 88°F by day and 67°F at night; January is the coldest at 45°F and 25°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 89% of years and May still brings one in 12% of years.

Warmth for growing adds up to 4,093 growing degree days a year (base 50°F), fewer than at 77% of the 144 Tennessee stations. 37% of them (1,515) have built up by the end of June, and July adds the most, 842. Precipitation totals 54.9 inches a year, most in May (5.7") and least in September (3.7"); May to September bring 42% of it.

The nearest other station, Hartsville, TN, 11 miles southeast of Bethpage, has a last frost 4 days earlier (April 12), a first frost 3 days later (October 26), a season 7 days longer.

The first measurable snow (0.1 inch or more) in Bethpage usually arrives around January 18, and the last of the season around February 10. Those are the middle dates across the winters of 1991–2020 at Bethpage 1 S, TN, 3.2 miles away: half of years saw snow earlier, half later. Snow fell in 76% of those winters. The last 32°F night of spring typically comes 65 days after the last snow.

ZIP 37022 is 3 miles from Bethpage 1 S, TN, which stands at 560 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 3 other ZIP codes share the station; its figures are presented in full for 37066 (Gallatin). The 2023 USDA Plant Hardiness Zone Map lists ZIP 37022 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.