Frost Dates for 72933 — Charleston, Arkansas

Half of springs at Booneville 3 SSE, AR see their last 32°F night by April 4; only one in ten is past it by March 17, and one in ten still has one after April 21. Planting tender crops after April 11 leaves a 30% risk of a frost on them, after April 16 20%, and after April 21 10%. The 17 days between the even-odds date and the one-in-ten date is narrower than at 41% of the 105 Arkansas stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 1 in half of years, as early as October 18 one year in ten, and holds off past November 17 one year in ten. A hard freeze of 28°F follows 9 days later, around November 10; in spring the one-in-ten date for 28°F is April 10, 11 days before the 32°F one. The freeze-free season lasts 210 days in a typical year, shorter than at 77% of the 105 Arkansas stations; it reaches 233 days one year in ten and falls short of 189 one year in ten. On average 72 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 16, and return around October 23. Severe cold of 16°F or below comes in 94% of winters, usually between December 25 and February 7.

July is the warmest month at Booneville 3 SSE, AR, averaging 92°F by day and 70°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 63% of years.

Warmth for growing adds up to 5,014 growing degree days a year (base 50°F), fewer than at 54% of the 105 Arkansas stations. 38% of them (1,891) have built up by the end of June, and July adds the most, 961. Precipitation totals 51.7 inches a year, most in May (5.8") and least in February (3.2"); May to September bring 42% of it.

The nearest other station, Ozark 2, AR, 17 miles northeast of Charleston and 230 feet higher, has a last frost 5 days earlier (March 30), a first frost 5 days later (November 6), a season 12 days longer.

Measurable snow is rare here: only 6 of 18 winters from 1991 to 2020 recorded 0.1 inch or more at Coal Hill, AR, 22.3 miles away, so there is no typical first-snow date to plan around.

ZIP 72933 is 16 miles from Booneville 3 SSE, AR, which stands at 600 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station; its figures are presented in full for 72927 (Booneville). The 2023 USDA Plant Hardiness Zone Map lists ZIP 72933 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.