Frost Dates for 24382 — Wytheville, Virginia

Half of springs at Wytheville, VA see their last 32°F night by April 25; only one in ten is past it by April 10, and one in ten still has one after May 16. Planting tender crops after May 4 leaves a 30% risk of a frost on them, after May 9 20%, and after May 16 10%. The 21 days between the even-odds date and the one-in-ten date is wider than at 92% of the 128 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 18 in half of years, as early as October 5 one year in ten, and holds off past November 1 one year in ten. A hard freeze of 28°F follows 9 days later, around October 27; in spring the one-in-ten date for 28°F is May 3, 13 days before the 32°F one. The freeze-free season lasts 174 days in a typical year, shorter than at 86% of the 128 Virginia stations; it reaches 195 days one year in ten and falls short of 152 one year in ten. On average 131 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 May 7, and return around October 8. Severe cold of 16°F or below comes every winter, usually between December 2 and March 1.

July is the warmest month at Wytheville, VA, averaging 83°F by day and 61°F at night; January is the coldest at 42°F and 24°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 39% of years.

Warmth for growing adds up to 3,026 growing degree days a year (base 50°F), fewer than at 91% of the 128 Virginia stations. 35% of them (1,059) have built up by the end of June, and July adds the most, 673. Precipitation totals 41.8 inches a year, most in May (4.3") and least in November (2.6"); May to September bring 47% of it.

The nearest other station, Bland, VA, 11 miles north of Wytheville and 458 feet lower, has a last frost 11 days later (May 6), a first frost 8 days earlier (October 10), a season 17 days shorter.

The first measurable snow (0.1 inch or more) in Wytheville usually arrives around December 6, and the last of the season around March 12. Those are the middle dates across the winters of 1991–2020 at Wytheville, VA, 1.1 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 44 days after the last snow.

ZIP 24382 is 1 mile from Wytheville, VA, which stands at 2,458 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 24382 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.