Frost Dates for 38012 — Brownsville, Tennessee

Half of springs at Brownsville, TN see their last 32°F night by March 29; only one in ten is past it by March 9, and one in ten still has one after April 15. Planting tender crops after April 4 leaves a 30% risk of a frost on them, after April 9 20%, and after April 15 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 November 5 in half of years, as early as October 24 one year in ten, and holds off past November 22 one year in ten. A hard freeze of 28°F follows 12 days later, around November 17; in spring the one-in-ten date for 28°F is April 5, 10 days before the 32°F one. The freeze-free season lasts 221 days in a typical year, longer than at 92% of the 144 Tennessee stations; it reaches 246 days one year in ten and falls short of 201 one year in ten. On average 67 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 11 days longer, to about April 9, and return around October 27. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 89%.

July is the warmest month at Brownsville, TN, averaging 91°F by day and 71°F at night; January is the coldest at 48°F and 30°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 42% of years.

Warmth for growing adds up to 5,179 growing degree days a year (base 50°F), more than at 95% of the 144 Tennessee stations. 39% of them (2,041) have built up by the end of June, and July adds the most, 961. Precipitation totals 56.3 inches a year, most in May (6.0") and least in August (3.3"); May to September bring 39% of it.

The nearest other station, Alamo 1 N, TN, 16 miles northeast of Brownsville, has a last frost 1 day earlier (March 28), a first frost 1 day earlier (November 4), a season 1 day shorter.

The first measurable snow (0.1 inch or more) in Brownsville usually arrives around January 12, and the last of the season around February 6. Those are the middle dates across the winters of 1991–2020 at Brownsville, TN, 0.2 miles away: half of years saw snow earlier, half later. Snow fell in 85% of those winters. The last 32°F night of spring typically comes 51 days after the last snow.

ZIP 38012 is under a mile from Brownsville, TN, which stands at 330 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 38012 in zone 8a, the band where the coldest night of the year averaged 10 to 15°F (-12.2 to -9.4°C) over 1991–2020; a zone describes winter lows, not frost dates.