Frost Dates for 25901 — Oak Hill, West Virginia

Half of springs at Oak Hill, WV see their last 32°F night by April 21; only one in ten is past it by April 5, and one in ten still has one after May 13. Planting tender crops after April 30 leaves a 30% risk of a frost on them, after May 5 20%, and after May 13 10%. The 22 days between the even-odds date and the one-in-ten date is wider than at 98% of the 84 West Virginia stations behind this site's ZIP pages, so a fixed calendar date is a gamble here.

In fall the first 32°F night comes by October 19 in half of years, as early as October 6 one year in ten, and holds off past November 1 one year in ten. A hard freeze of 28°F follows 11 days later, around October 30; in spring the one-in-ten date for 28°F is April 28, 15 days before the 32°F one. The freeze-free season lasts 179 days in a typical year, shorter than at 49% of the 84 West Virginia stations; it reaches 200 days one year in ten and falls short of 156 one year in ten. On average 115 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 May 4, and return around October 11. Severe cold of 16°F or below comes every winter, usually between December 11 and March 4.

July is the warmest month at Oak Hill, WV, averaging 81°F by day and 61°F at night; January is the coldest at 41°F and 23°F. A freezing night is all but certain in every month from November 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 28% of years.

Warmth for growing adds up to 3,088 growing degree days a year (base 50°F), fewer than at 70% of the 84 West Virginia stations. 36% of them (1,108) have built up by the end of June, and July adds the most, 660. Precipitation totals 48.0 inches a year, most in June (5.6") and least in October (2.9"); May to September bring 48% of it.

The nearest other station, Anstead Hawks Nest Sp, WV, 10 miles north of Oak Hill and 744 feet lower, has a last frost 1 day later (April 22), a first frost 3 days later (October 22), a season 2 days longer.

The first measurable snow (0.1 inch or more) in Oak Hill usually arrives around November 27, and the last of the season around March 31. Those are the middle dates across the winters of 1991–2020 at Oak Hill, WV, 0.8 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 21 days after the last snow.

ZIP 25901 is under a mile from Oak Hill, WV, which stands at 2,040 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 25901 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.