Frost Dates for 25535 — Lavalette, West Virginia

Half of springs at Huntington Tri State Airport, WV see their last 32°F night by April 14; only one in ten is past it by March 28, and one in ten still has one after May 3. Planting tender crops after April 21 leaves a 30% risk of a frost on them, after April 26 20%, and after May 3 10%. The 19 days between the even-odds date and the one-in-ten date is wider than at 61% of the 84 West Virginia stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 26 in half of years, as early as October 13 one year in ten, and holds off past November 7 one year in ten. A hard freeze of 28°F follows 10 days later, around November 5; in spring the one-in-ten date for 28°F is April 16, 17 days before the 32°F one. The freeze-free season lasts 195 days in a typical year, longer than at 90% of the 84 West Virginia stations; it reaches 215 days one year in ten and falls short of 171 one year in ten. On average 90 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 27, and return around October 17. Severe cold of 16°F or below comes every winter, usually between December 18 and February 23.

July is the warmest month at Huntington Tri State Airport, WV, averaging 86°F by day and 66°F at night; January is the coldest at 43°F and 26°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 82% of years and May still brings one in 12% of years.

Warmth for growing adds up to 4,052 growing degree days a year (base 50°F), more than at 96% of the 84 West Virginia stations. 38% of them (1,540) have built up by the end of June, and July adds the most, 818. Precipitation totals 45.3 inches a year, most in July (5.1") and least in October (3.0"); May to September bring 46% of it.

The nearest other station, Huntington Swg Pl, WV, 8 miles northwest of Lavalette and 304 feet lower, has a last frost 2 days earlier (April 12), a first frost 4 days later (October 30), a season 5 days longer.

The first measurable snow (0.1 inch or more) in Lavalette usually arrives around December 6, and the last of the season around March 9. Those are the middle dates across the winters of 1991–2020 at Huntington Tri State Airport, WV, 7.3 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 36 days after the last snow.

ZIP 25535 is 7 miles from Huntington Tri State Airport, WV, which stands at 824 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 4 other ZIP codes share the station; its figures are presented in full for 41129 (Catlettsburg). The 2023 USDA Plant Hardiness Zone Map lists ZIP 25535 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.