Frost Dates for 71923 — Arkadelphia, Arkansas

Half of springs at Arkadelphia 2 N, AR see their last 32°F night by March 26; only one in ten is past it by March 6, and one in ten still has one after April 11. Planting tender crops after April 1 leaves a 30% risk of a frost on them, after April 5 20%, and after April 11 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 65% of the 105 Arkansas stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 4 in half of years, as early as October 23 one year in ten, and holds off past November 21 one year in ten. A hard freeze of 28°F follows 12 days later, around November 16; in spring the one-in-ten date for 28°F is March 30, 12 days before the 32°F one. The freeze-free season lasts 225 days in a typical year, longer than at 54% of the 105 Arkansas stations; it reaches 250 days one year in ten and falls short of 201 one year in ten. On average 66 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 6, and return around October 27. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 74%.

July is the warmest month at Arkadelphia 2 N, AR, averaging 94°F by day and 71°F at night; January is the coldest at 55°F and 31°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 31% of years.

Warmth for growing adds up to 5,618 growing degree days a year (base 50°F), more than at 90% of the 105 Arkansas stations. 40% of them (2,224) have built up by the end of June, and July adds the most, 1,004. Precipitation totals 54.8 inches a year, most in May (6.6") and least in August (3.3"); May to September bring 40% of it.

The nearest other station, Degray Lake Sp, AR, 11 miles northwest of Arkadelphia and 294 feet higher, has a last frost 6 days earlier (March 20), a first frost 6 days later (November 10), a season 9 days longer.

Measurable snow is rare here: only 11 of 26 winters from 1991 to 2020 recorded 0.1 inch or more at Arkadelphia 2 N, AR, 2.2 miles away, so there is no typical first-snow date to plan around.

ZIP 71923 is 2 miles from Arkadelphia 2 N, AR, which stands at 196 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 71923 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.