Frost Dates for 26149 — Middlebourne, West Virginia

Half of springs at Middlebourne 3 ESE, WV see their last 32°F night by May 1; only one in ten is past it by April 17, and one in ten still has one after May 19. Planting tender crops after May 8 leaves a 30% risk of a frost on them, after May 12 20%, and after May 19 10%. The 18 days between the even-odds date and the one-in-ten date is narrower than at 40% of the 84 West Virginia stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 15 in half of years, as early as October 2 one year in ten, and holds off past October 28 one year in ten. A hard freeze of 28°F follows 10 days later, around October 25; in spring the one-in-ten date for 28°F is May 7, 12 days before the 32°F one. The freeze-free season lasts 167 days in a typical year, shorter than at 77% of the 84 West Virginia stations; it reaches 185 days one year in ten and falls short of 144 one year in ten. On average 134 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 11 days longer, to about May 12, and return around October 5. Severe cold of 16°F or below comes every winter, usually between November 29 and March 14.

July is the warmest month at Middlebourne 3 ESE, WV, averaging 84°F by day and 61°F at night; January is the coldest at 39°F and 19°F. A freezing night is all but certain in every month from October to April (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 51% of years.

Warmth for growing adds up to 3,091 growing degree days a year (base 50°F), fewer than at 69% of the 84 West Virginia stations. 35% of them (1,083) have built up by the end of June, and July adds the most, 701. Precipitation totals 47.3 inches a year, most in July (5.1") and least in November (3.1"); May to September bring 47% of it.

The nearest other station, Hannibal Locks & Dam, OH, 13 miles north of Middlebourne and 159 feet lower, has a last frost 5 days earlier (April 26), a first frost 11 days later (October 26), a season 15 days longer.

The first measurable snow (0.1 inch or more) in Middlebourne usually arrives around December 3, and the last of the season around March 15. Those are the middle dates across the winters of 1991–2020 at Middlebourne 3 ESE, WV, 1.3 miles away: half of years saw snow earlier, half later. Every one of those winters saw snow. The last 32°F night of spring typically comes 47 days after the last snow.

ZIP 26149 is 1 mile from Middlebourne 3 ESE, WV, which stands at 779 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 26175 (Sistersville). The 2023 USDA Plant Hardiness Zone Map lists ZIP 26149 in zone 6b, the band where the coldest night of the year averaged -5 to 0°F (-20.6 to -17.8°C) over 1991–2020; a zone describes winter lows, not frost dates.