U.S. Frost Dates by Weather Station

NOAA station USC00310576 · North Carolina

Frost Dates for Bayboro, NC

NOAA weather station Bayboro 3 SW (USC00310576), North Carolina · elevation 5 ft (2 m) · hardiness zone 8b*

  • Lower-risk planting dateafter April 15only 1 spring in 10 still has a frost later
  • Typical last frostMarch 3050% chance of a frost after it
  • Typical first fall frostNovember 850% chance of a frost before it
  • Frost-free season224 daystypical year, 32°F
  • Hardiness zone8bcalculated*

The year at a glance

Frost season at Bayboro, NCSpring: a frost after March 11 in 9 years out of 10, after March 30 in half of the years, after April 15 in 1 year out of 10. Fall: the first frost comes before October 26 in 1 year out of 10, before November 8 in half of the years, before November 30 in 9 years out of 10. Typical frost-free season: 224 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Mar 30First frost ~Nov 8Frost season at Bayboro, NCSpring: a frost after March 11 in 9 years out of 10, after March 30 in half of the years, after April 15 in 1 year out of 10. Fall: the first frost comes before October 26 in 1 year out of 10, before November 8 in half of the years, before November 30 in 9 years out of 10. Typical frost-free season: 224 days.JFMAMJJASONDLast frost ~Mar 30First frost ~Nov 8
frost likely chance fading 90% → 10% frost-free in a typical yearThe year at a glance. Blue: frost is likely; the gradient fades as the chance drops from 90% to 10%; green: the frost-free part of a typical year.

Frost dates (32°F)

Probability of frost, based on 25 years of NOAA records (1991–2020 normals)
ChanceLast frost in spring afterFirst frost in fall before
10% (unlikely)April 15October 26
50% (typical)March 30November 8
90% (likely)March 11November 30
Frost-free season (32°F, 50% chance)
224 days
Hard frost (28°F), last in spring, 50% chance after
March 17
Hard frost (28°F), first in fall, 50% chance before
November 20

The last 15 years (2006–2020 normals)

Typical last frost March 21 (9 days earlier than the 30-year normal), typical first fall frost November 17 (9 days later). Frost-free season 241 days.

A shorter, more recent NOAA period. The 30-year normals above remain the main reference: 15 years carry more year-to-year noise.

Add these dates to your calendar Yearly reminders for the typical last frost, the lower-risk planting date and the typical first fall frost (.ics).

How the chance of frost changes with the date

Spring at Bayboro: chance of a frost after this dateSpring, chance of a frost after the date: 10% April 15, 20% April 9, 30% April 5, 40% April 1, 50% March 30, 60% March 26, 70% March 23, 80% March 18, 90% March 11. Observed last spring frost in recent years: 2021 March 10, 2022 March 14, 2023 March 22, 2024 February 9, 2025 March 4, 2026 February 15.Spring: last frostChance of a frost after this date10%50%90%Mar 1Apr 1Apr 15Mar 30Mar 112021: March 102022: March 142023: March 222024: February 92025: March 42026: February 15Fall at Bayboro: chance of a frost before this dateFall, chance of a frost before the date: 10% October 26, 20% October 31, 30% November 2, 40% November 5, 50% November 8, 60% November 11, 70% November 15, 80% November 21, 90% November 30. Observed first fall frost in recent years: 2021 November 24, 2022 November 18, 2023 November 29, 2024 December 1, 2025 November 29.Fall: first frostChance of a frost before this date10%50%90%Nov 1Dec 1Oct 26Nov 8Nov 302021: November 242022: November 182023: November 292024: December 12025: November 29
Two charts, because spring and fall answer different questions: in spring, the chance that a frost still comes after a date; in fall, the chance that the first frost has already come before it. NOAA publishes these odds from 10% to 90%, so the lines stop there. ◆ marks the actual date in each recent year.

What actually happened in recent years

Observed dates of the last spring and first fall frost (32°F) at this station; ◆ marks them on the charts above
YearLast spring frostFirst fall frost
2021March 10November 24
2022March 14November 18
2023March 22November 29
2024February 9December 1
2025March 4November 29
2026February 15season not over yet

What these dates mean

Setting out tender crops on March 11 in Bayboro carries a 90% chance of a light frost later, making it a gamble for growers.

The 50% date for light frost in spring is March 30, where the chance of a frost is 50%. In fall the 50% date is November 8, where the chance of a frost is 50%. A cautious planting plan would wait until the April 15 light-frost date, which has only a 10% chance of a later frost, while harvesting tender crops should be finished by the October 26 light-frost date, which has only a 10% chance of a frost having arrived earlier.

Hard frost at 28 °F is more damaging than light frost at 32 °F, and its 50% dates are March 17 in spring and November 20 in fall.

How to read the probabilities

The dates are probabilities from 30 years of weather, not a forecast for this year.

  • Spring: "10% after April 15" means that in about one spring out of ten a frost still happens after that date. The 90% date is the earliest: a frost after it happens in most years.
  • Fall: "10% before October 26" means that in about one fall out of ten the first frost arrives before that date.
  • 50% is the typical date: half of the years are earlier, half are later.
  • A light frost (32°F) damages tender plants; a hard frost (28°F) also stops most hardy vegetables.

Nearby weather stations

Map of weather stations near Bayboro, NCNumbered nearest stations: 1 — near New Bern, NC — 14 mi; 2 — Greenville, NC — 48 mi; 3 — Williamston, NC — 51 mi; 4 — Plymouth, NC — 52 mi; 5 — Edenton, NC — 63 mi.25 mi · 40 km1. near New Bern, NC — 14 mi12. Greenville, NC — 48 mi23. Williamston, NC — 51 mi34. Plymouth, NC — 52 mi45. Edenton, NC — 63 mi5
  1. near New Bern, NC 14 mi (22 km)
  2. Greenville, NC 48 mi (77 km)
  3. Williamston, NC 51 mi (83 km)
  4. Plymouth, NC 52 mi (84 km)
  5. Edenton, NC 63 mi (101 km)

Sources

* Hardiness zone 8b: zone derived from PRISM 2023 grid at the station location (not the official USDA map). Source data: PRISM Group, Oregon State University.

Station coordinates: 35.1311, -76.8161.