Frost Dates for 24179 — Vinton, Virginia

Half of springs at Roanoke Regional Airport, VA see their last 32°F night by April 3; only one in ten is past it by March 19, and one in ten still has one after April 18. Planting tender crops after April 9 leaves a 30% risk of a frost on them, after April 13 20%, and after April 18 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 70% of the 128 Virginia stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 1 in half of years, as early as October 18 one year in ten, and holds off past November 15 one year in ten. A hard freeze of 28°F follows 11 days later, around November 12; in spring the one-in-ten date for 28°F is April 7, 11 days before the 32°F one. The freeze-free season lasts 210 days in a typical year, longer than at 78% of the 128 Virginia stations; it reaches 231 days one year in ten and falls short of 189 one year in ten. On average 77 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 14 days longer, to about April 17, and return around October 22. Severe cold of 16°F or below comes in 95% of winters, usually between January 1 and February 9.

July is the warmest month at Roanoke Regional Airport, VA, averaging 88°F by day and 67°F at night; January is the coldest at 47°F and 29°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 60% of years.

Warmth for growing adds up to 4,276 growing degree days a year (base 50°F), more than at 72% of the 128 Virginia stations. 38% of them (1,614) have built up by the end of June, and July adds the most, 860. Precipitation totals 43.0 inches a year, most in June (4.7") and least in February (2.9"); May to September bring 48% of it.

The nearest other station, Roanoke 8 N, VA, 8 miles northwest of Vinton, has a last frost 8 days later (April 11), a first frost 4 days earlier (October 28), a season 12 days shorter.

The first measurable snow (0.1 inch or more) in Vinton usually arrives around December 23, and the last of the season around March 6. Those are the middle dates across the winters of 1991–2020 at Roanoke Regional Airport, VA, 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 28 days after the last snow.

ZIP 24179 is 7 miles from Roanoke Regional Airport, VA, which stands at 1,175 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 10 other ZIP codes share the station; its figures are presented in full for 24018 (Roanoke). The 2023 USDA Plant Hardiness Zone Map lists ZIP 24179 in zone 7b, the band where the coldest night of the year averaged 5 to 10°F (-15.0 to -12.2°C) over 1991–2020; a zone describes winter lows, not frost dates.