Frost Dates for 71671 — Warren, Arkansas

Half of springs at Warren 2 WSW, AR see their last 32°F night by March 20; only one in ten is past it by March 2, and one in ten still has one after April 7. Planting tender crops after March 29 leaves a 30% risk of a frost on them, after April 2 20%, and after April 7 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 November 11 in half of years, as early as October 28 one year in ten, and holds off past November 29 one year in ten. A hard freeze of 28°F follows 12 days later, around November 23; in spring the one-in-ten date for 28°F is March 24, 14 days before the 32°F one. The freeze-free season lasts 235 days in a typical year, longer than at 75% of the 105 Arkansas stations; it reaches 261 days one year in ten and falls short of 211 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 April 2, and return around October 31. Nights of 24°F, cold enough to damage hardier plants, come in 99% of winters and 16°F in 60%.

July is the warmest month at Warren 2 WSW, AR, averaging 91°F by day and 71°F at night; January is the coldest at 52°F and 32°F. A freezing night is all but certain in every month from December to February (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 89% of years and April still brings one in 24% of years.

Warmth for growing adds up to 5,406 growing degree days a year (base 50°F), more than at 72% of the 105 Arkansas stations. 39% of them (2,133) have built up by the end of June, and July adds the most, 967. Precipitation totals 59.2 inches a year, most in April (6.7") and least in July (3.3"); May to September bring 36% of it.

The nearest other station, Monticello Municipal Airport, AR, 19 miles east of Warren, has a last frost 2 days earlier (March 18), a first frost 1 day later (November 12), a season 3 days longer.

Measurable snow is rare here: only 9 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Warren 2 WSW, AR, 1.1 miles away, so there is no typical first-snow date to plan around.

ZIP 71671 is 1 mile from Warren 2 WSW, AR, which stands at 210 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 71671 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.