Frost Dates for 72315 — Blytheville, Arkansas

Half of springs at Blytheville, AR see their last 32°F night by March 18; only one in ten is past it by March 2, and one in ten still has one after April 3. Planting tender crops after March 27 leaves a 30% risk of a frost on them, after March 30 20%, and after April 3 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 14 in half of years, as early as November 1 one year in ten, and holds off past December 1 one year in ten. A hard freeze of 28°F follows 13 days later, around November 27; in spring the one-in-ten date for 28°F is March 24, 10 days before the 32°F one. The freeze-free season lasts 240 days in a typical year, longer than at 86% of the 105 Arkansas stations; it reaches 263 days one year in ten and falls short of 218 one year in ten. On average 58 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 13 days longer, to about March 31, and return around November 3. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 82%.

July is the warmest month at Blytheville, AR, averaging 90°F by day and 73°F at night; January is the coldest at 45°F and 30°F. A freezing night is all but certain in every month from December to February (a 90% chance or more). From May to October the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 90% of years and April still brings one in 17% of years.

Warmth for growing adds up to 5,174 growing degree days a year (base 50°F), more than at 58% of the 105 Arkansas stations. 39% of them (2,034) have built up by the end of June, and July adds the most, 970. Precipitation totals 51.8 inches a year, most in May (5.9") and least in September (2.8"); May to September bring 39% of it.

The nearest other station, Blytheville Municipal Airport, AR, 5 miles east of Blytheville, has a last frost 6 days later (March 24), a first frost 8 days earlier (November 6), a season 13 days shorter.

The first measurable snow (0.1 inch or more) in Blytheville usually arrives around January 22, and the last of the season around February 10. Those are the middle dates across the winters of 1991–2020 at Blytheville, AR, 0.8 miles away: half of years saw snow earlier, half later. Snow fell in 60% of those winters. The last 32°F night of spring typically comes 36 days after the last snow.

ZIP 72315 is under a mile from Blytheville, AR, which stands at 252 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 72315 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.