Frost Dates for 72058 — Greenbrier, Arkansas

Half of springs at Greenbrier, AR see their last 32°F night by April 9; only one in ten is past it by March 23, and one in ten still has one after April 24. Planting tender crops after April 15 leaves a 30% risk of a frost on them, after April 19 20%, and after April 24 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 86% of the 105 Arkansas stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 25 in half of years, as early as October 11 one year in ten, and holds off past November 8 one year in ten. A hard freeze of 28°F follows 11 days later, around November 5; in spring the one-in-ten date for 28°F is April 13, 11 days before the 32°F one. The freeze-free season lasts 198 days in a typical year, shorter than at 92% of the 105 Arkansas stations; it reaches 220 days one year in ten and falls short of 178 one year in ten. On average 88 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 20, and return around October 15. Severe cold of 16°F or below comes in 98% of winters, usually between December 18 and February 17.

July is the warmest month at Greenbrier, AR, averaging 92°F by day and 69°F at night; January is the coldest at 49°F and 28°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 77% of years.

Warmth for growing adds up to 4,762 growing degree days a year (base 50°F), fewer than at 70% of the 105 Arkansas stations. 38% of them (1,814) have built up by the end of June, and July adds the most, 933. Precipitation totals 50.7 inches a year, most in April (5.5") and least in January (3.2"); May to September bring 40% of it.

The nearest other station, Conway, AR, 11 miles southwest of Greenbrier, has a last frost 7 days earlier (April 2), a first frost 8 days later (November 2), a season 17 days longer.

The first measurable snow (0.1 inch or more) in Greenbrier usually arrives around December 27, and the last of the season around February 14. Those are the middle dates across the winters of 1991–2020 at Center Ridge 3 S, AR, 12.7 miles away: half of years saw snow earlier, half later. Snow fell in 86% of those winters. The last 32°F night of spring typically comes 54 days after the last snow.

ZIP 72058 is under a mile from Greenbrier, AR, which stands at 338 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 72058 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.