U.S. Frost Dates by Weather Station

NOAA station USC00380184 · South Carolina

Frost Dates for Andrews, SC

NOAA weather station Andrews (USC00380184), South Carolina · elevation 35 ft (11 m) · hardiness zone 8b*

  • Lower-risk planting dateafter April 7only 1 spring in 10 still has a frost later
  • Typical last frostMarch 2350% chance of a frost after it
  • Typical first fall frostNovember 1350% chance of a frost before it
  • Frost-free season237 daystypical year, 32°F
  • Hardiness zone8bcalculated*

The year at a glance

Frost season at Andrews, SCSpring: a frost after March 4 in 9 years out of 10, after March 23 in half of the years, after April 7 in 1 year out of 10. Fall: the first frost comes before November 1 in 1 year out of 10, before November 13 in half of the years, before December 1 in 9 years out of 10. Typical frost-free season: 237 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Mar 23First frost ~Nov 13Frost season at Andrews, SCSpring: a frost after March 4 in 9 years out of 10, after March 23 in half of the years, after April 7 in 1 year out of 10. Fall: the first frost comes before November 1 in 1 year out of 10, before November 13 in half of the years, before December 1 in 9 years out of 10. Typical frost-free season: 237 days.JFMAMJJASONDLast frost ~Mar 23First frost ~Nov 13
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 30 years of NOAA records (1991–2020 normals)
ChanceLast frost in spring afterFirst frost in fall before
10% (unlikely)April 7November 1
50% (typical)March 23November 13
90% (likely)March 4December 1
Frost-free season (32°F, 50% chance)
237 days
Hard frost (28°F), last in spring, 50% chance after
March 8
Hard frost (28°F), first in fall, 50% chance before
November 25

The last 15 years (2006–2020 normals)

Typical last frost March 21 (2 days earlier than the 30-year normal), typical first fall frost November 13. Frost-free season 239 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 Andrews: chance of a frost after this dateSpring, chance of a frost after the date: 10% April 7, 20% April 1, 30% March 29, 40% March 26, 50% March 23, 60% March 19, 70% March 16, 80% March 10, 90% March 4. Observed last spring frost in recent years: 2021 April 4, 2022 March 15, 2023 March 22, 2024 February 23, 2025 March 8, 2026 March 19.Spring: last frostChance of a frost after this date10%50%90%Mar 1Apr 1Apr 7Mar 23Mar 42021: April 42022: March 152023: March 222024: February 232025: March 82026: March 19Fall at Andrews: chance of a frost before this dateFall, chance of a frost before the date: 10% November 1, 20% November 4, 30% November 6, 40% November 9, 50% November 13, 60% November 16, 70% November 20, 80% November 25, 90% December 1. Observed first fall frost in recent years: 2021 November 24, 2022 November 18, 2023 November 2, 2024 November 30, 2025 November 11.Fall: first frostChance of a frost before this date10%50%90%Nov 1Dec 1Nov 1Nov 13Dec 12021: November 242022: November 182023: November 22024: November 302025: November 11
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
2021April 4November 24
2022March 15November 18
2023March 22November 2
2024February 23November 30
2025March 8November 11
2026March 19season not over yet

What these dates mean

The 237 days between the 32°F 50% dates in Andrews, March 23 and November 13, frame the window in which tender crops can be sown and harvested.

The 50% date is March 23, which carries a 50% chance of a light frost later than this date, and the fall 50% date is November 13, which carries a 50% chance of a light frost earlier than this date. For a cautious spring plan, the LATE date of April 7 (10% chance of a frost later) is used, while a cautious fall plan relies on the EARLY date of November 1 (10% chance of a frost earlier).

The hard-frost median dates are March 8 and November 25; these colder 28°F events can damage plants that would otherwise survive a 32°F light frost.

How to read the probabilities

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

  • Spring: "10% after April 7" 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 November 1" 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 Andrews, SCNumbered nearest stations: 1 — Manning, SC — 41 mi; 2 — Charleston, SC — 46 mi; 3 — Florence, SC — 52 mi; 4 — Darlington, SC — 62 mi; 5 — Longwood, NC — 71 mi.SCNC25 mi · 40 km1. Manning, SC — 41 mi12. Charleston, SC — 46 mi23. Florence, SC — 52 mi34. Darlington, SC — 62 mi45. Longwood, NC — 71 mi5
  1. Manning, SC 41 mi (65 km)
  2. Charleston, SC 46 mi (75 km)
  3. Florence, SC 52 mi (84 km)
  4. Darlington, SC 62 mi (100 km)
  5. Longwood, NC 71 mi (114 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: 33.4408, -79.5672.