Frost Dates for 27970 — Roper, North Carolina

Half of springs at Plymouth 5 E, NC see their last 32°F night by March 31; only one in ten is past it by March 14, and one in ten still has one after April 15. Planting tender crops after April 6 leaves a 30% risk of a frost on them, after April 9 20%, and after April 15 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 57% of the 173 North Carolina stations behind this site's ZIP pages.

In fall the first 32°F night comes by November 7 in half of years, as early as October 25 one year in ten, and holds off past November 23 one year in ten. A hard freeze of 28°F follows 14 days later, around November 21; in spring the one-in-ten date for 28°F is April 2, 13 days before the 32°F one. The freeze-free season lasts 221 days in a typical year, longer than at 60% of the 173 North Carolina stations; it reaches 245 days one year in ten and falls short of 201 one year in ten. On average 52 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 11 days longer, to about April 11, and return around October 30. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 69%.

July is the warmest month at Plymouth 5 E, NC, averaging 89°F by day and 70°F at night; January is the coldest at 54°F and 34°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 49% of years.

Warmth for growing adds up to 5,186 growing degree days a year (base 50°F), more than at 82% of the 173 North Carolina stations. 39% of them (2,021) have built up by the end of June, and July adds the most, 925. Precipitation totals 54.5 inches a year, most in August (6.6") and least in February (3.4"); May to September bring 51% of it.

The nearest other station, Edenton, NC, 9 miles north of Roper, has a last frost 7 days earlier (March 24), a first frost 7 days later (November 14), a season 17 days longer.

Measurable snow is rare here: only 8 of 23 winters from 1991 to 2020 recorded 0.1 inch or more at Plymouth 5 E, NC, 4.9 miles away, so there is no typical first-snow date to plan around.

ZIP 27970 is 5 miles from Plymouth 5 E, NC, which stands at 20 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 27962 (Plymouth). The 2023 USDA Plant Hardiness Zone Map lists ZIP 27970 in zone 8b, the band where the coldest night of the year averaged 15 to 20°F (-9.4 to -6.7°C) over 1991–2020; a zone describes winter lows, not frost dates.