Frost Dates for 71943 — Glenwood, Arkansas

Half of springs at Mt Ida 3 SE, AR see their last 32°F night by April 8; only one in ten is past it by March 18, and one in ten still has one after April 26. Planting tender crops after April 16 leaves a 30% risk of a frost on them, after April 21 20%, and after April 26 10%. The 18 days between the even-odds date and the one-in-ten date is wider than at 60% of the 105 Arkansas stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 26 in half of years, as early as October 12 one year in ten, and holds off past November 12 one year in ten. A hard freeze of 28°F follows 10 days later, around November 5; in spring the one-in-ten date for 28°F is April 14, 12 days before the 32°F one. The freeze-free season lasts 201 days in a typical year, shorter than at 90% of the 105 Arkansas stations; it reaches 227 days one year in ten and falls short of 179 one year in ten. On average 91 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 19, and return around October 17. Severe cold of 16°F or below comes in 96% of winters, usually between December 19 and February 7.

July is the warmest month at Mt Ida 3 SE, AR, averaging 90°F by day and 69°F at night; January is the coldest at 50°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 66% of years.

Warmth for growing adds up to 4,580 growing degree days a year (base 50°F), fewer than at 79% of the 105 Arkansas stations. 38% of them (1,725) have built up by the end of June, and July adds the most, 902. Precipitation totals 58.1 inches a year, most in May (6.6") and least in August (3.0"); May to September bring 40% of it.

The nearest other station, Mount Ida Asos, AR, 16 miles north of Glenwood, has a last frost 6 days earlier (April 2), a first frost 5 days later (October 31), a season 12 days longer.

Measurable snow is rare here: only 8 of 22 winters from 1991 to 2020 recorded 0.1 inch or more at Glenwood 4 NNE, AR, 6.8 miles away, so there is no typical first-snow date to plan around.

ZIP 71943 is 15 miles from Mt Ida 3 SE, AR, which stands at 697 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 71943 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.