Frost Dates for 72847 — London, Arkansas

Half of springs at Dardanelle, AR see their last 32°F night by April 1; only one in ten is past it by March 16, and one in ten still has one after April 17. Planting tender crops after April 6 leaves a 30% risk of a frost on them, after April 10 20%, and after April 17 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 2 in half of years, as early as October 22 one year in ten, and holds off past November 16 one year in ten. A hard freeze of 28°F follows 10 days later, around November 12; in spring the one-in-ten date for 28°F is April 6, 11 days before the 32°F one. The freeze-free season lasts 215 days in a typical year, shorter than at 64% of the 105 Arkansas stations; it reaches 236 days one year in ten and falls short of 196 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 12 days longer, to about April 13, and return around October 24. Severe cold of 16°F or below comes in 93% of winters, usually between December 29 and January 31.

July is the warmest month at Dardanelle, AR, averaging 93°F by day and 71°F at night; January is the coldest at 51°F and 29°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 51% of years.

Warmth for growing adds up to 5,312 growing degree days a year (base 50°F), more than at 67% of the 105 Arkansas stations. 39% of them (2,055) have built up by the end of June, and July adds the most, 995. Precipitation totals 49.6 inches a year, most in May (5.4") and least in February (3.3"); May to September bring 40% of it.

The nearest other station, Clarksville 6 NE, AR, 12 miles northwest of London and 480 feet higher, has a last frost 7 days earlier (March 25), a first frost 8 days later (November 10), a season 17 days longer.

Measurable snow is rare here: only 9 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Clarksville 2N, AR, 13.4 miles away, so there is no typical first-snow date to plan around.

ZIP 72847 is 12 miles from Dardanelle, AR, which stands at 370 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 72834 (Dardanelle). The 2023 USDA Plant Hardiness Zone Map lists ZIP 72847 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.