Frost Dates for 65772 — Washburn, Missouri

Half of springs at Washburn 5 W, MO see their last 32°F night by April 4; only one in ten is past it by March 18, and one in ten still has one after April 23. Planting tender crops after April 10 leaves a 30% risk of a frost on them, after April 15 20%, and after April 23 10%. The 19 days between the even-odds date and the one-in-ten date is wider than at 92% of the 158 Missouri stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 30 in half of years, as early as October 17 one year in ten, and holds off past November 15 one year in ten. A hard freeze of 28°F follows 9 days later, around November 8; in spring the one-in-ten date for 28°F is April 9, 14 days before the 32°F one. The freeze-free season lasts 207 days in a typical year, longer than at 87% of the 158 Missouri stations; it reaches 230 days one year in ten and falls short of 185 one year in ten. On average 87 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 22. Severe cold of 16°F or below comes every winter, usually between December 13 and February 22.

July is the warmest month at Washburn 5 W, MO, averaging 89°F by day and 69°F at night; January is the coldest at 44°F and 26°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 58% of years.

Warmth for growing adds up to 4,395 growing degree days a year (base 50°F), more than at 85% of the 158 Missouri stations. 37% of them (1,611) have built up by the end of June, and July adds the most, 899.

The nearest other station, Seligman, MO, 7 miles southeast of Washburn, has a last frost 14 days later (April 18), a first frost 8 days earlier (October 22), a season 22 days shorter.

The first measurable snow (0.1 inch or more) in Washburn usually arrives around December 24, and the last of the season around February 23. Those are the middle dates across the winters of 1991–2020 at Monett 4SW, MO, 17 miles away: half of years saw snow earlier, half later. Snow fell in 92% of those winters. The last 32°F night of spring typically comes 40 days after the last snow.

ZIP 65772 is 4 miles from Washburn 5 W, MO, which stands at 1,400 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 72751 (Pea Ridge). The 2023 USDA Plant Hardiness Zone Map lists ZIP 65772 in zone 7a, the band where the coldest night of the year averaged 0 to 5°F (-17.8 to -15.0°C) over 1991–2020; a zone describes winter lows, not frost dates.