Frost Dates for 28771 — Robbinsville, North Carolina

Half of springs at Robbinsville Ag 5 NE, NC see their last 32°F night by April 13; only one in ten is past it by March 30, and one in ten still has one after May 2. Planting tender crops after April 20 leaves a 30% risk of a frost on them, after April 25 20%, and after May 2 10%. The 19 days between the even-odds date and the one-in-ten date is wider than at 90% of the 173 North Carolina 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 12 one year in ten, and holds off past November 6 one year in ten. A hard freeze of 28°F follows 8 days later, around November 3; in spring the one-in-ten date for 28°F is April 18, 14 days before the 32°F one. The freeze-free season lasts 194 days in a typical year, shorter than at 77% of the 173 North Carolina stations; it reaches 214 days one year in ten and falls short of 171 one year in ten. On average 96 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 15 days longer, to about April 28, and return around October 17. Severe cold of 16°F or below comes in 99% of winters, usually between December 19 and February 19.

July is the warmest month at Robbinsville Ag 5 NE, NC, averaging 83°F by day and 62°F at night; January is the coldest at 45°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 85% of years and May still brings one in 13% of years.

Warmth for growing adds up to 3,463 growing degree days a year (base 50°F), fewer than at 87% of the 173 North Carolina stations. 37% of them (1,279) have built up by the end of June, and July adds the most, 704. Precipitation totals 63.8 inches a year, most in December (6.5") and least in October (3.7"); May to September bring 41% of it.

The nearest other station, Andrews, NC, 10 miles south of Robbinsville and 581 feet lower, has a last frost 4 days later (April 17), a first frost 3 days earlier (October 23), a season 5 days shorter.

The first measurable snow (0.1 inch or more) in Robbinsville usually arrives around December 20, and the last of the season around March 2. Those are the middle dates across the winters of 1991–2020 at Townsend 5S, TN, 17.8 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 42 days after the last snow.

ZIP 28771 is 6 miles from Robbinsville Ag 5 NE, NC, which stands at 2,330 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 28771 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.