U.S. Frost Dates by Weather Station

NOAA station USC00013519 · Alabama

Frost Dates for Greenville, AL

NOAA weather station Greenville (USC00013519), Alabama · elevation 342 ft (104 m) · hardiness zone 8b*

  • Lower-risk planting dateafter April 15only 1 spring in 10 still has a frost later
  • Typical last frostMarch 2850% chance of a frost after it
  • Typical first fall frostNovember 750% chance of a frost before it
  • Frost-free season224 daystypical year, 32°F
  • Hardiness zone8bcalculated*

The year at a glance

Frost season at Greenville, ALSpring: a frost after March 8 in 9 years out of 10, after March 28 in half of the years, after April 15 in 1 year out of 10. Fall: the first frost comes before October 25 in 1 year out of 10, before November 7 in half of the years, before November 25 in 9 years out of 10. Typical frost-free season: 224 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Mar 28First frost ~Nov 7Frost season at Greenville, ALSpring: a frost after March 8 in 9 years out of 10, after March 28 in half of the years, after April 15 in 1 year out of 10. Fall: the first frost comes before October 25 in 1 year out of 10, before November 7 in half of the years, before November 25 in 9 years out of 10. Typical frost-free season: 224 days.JFMAMJJASONDLast frost ~Mar 28First frost ~Nov 7
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.Today

Frost dates (32°F)

Probability of frost, based on 28 years of NOAA records (1991–2020 normals)
ChanceLast frost in spring afterFirst frost in fall before
10% (unlikely)April 15October 25
50% (typical)March 28November 7
90% (likely)March 8November 25
Frost-free season (32°F, 50% chance)
224 days
Hard frost (28°F), last in spring, 50% chance after
March 13
Hard frost (28°F), first in fall, 50% chance before
November 19

The last 15 years (2006–2020 normals)

Typical last frost March 24 (4 days earlier than the 30-year normal), typical first fall frost November 6 (1 day earlier). Frost-free season 229 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 Greenville: chance of a frost after this dateSpring, chance of a frost after the date: 10% April 15, 20% April 8, 30% April 3, 40% March 31, 50% March 28, 60% March 24, 70% March 20, 80% March 15, 90% March 8. Observed last spring frost in recent years: 2022 March 15, 2023 March 22, 2024 March 21, 2025 March 22, 2026 March 18.Spring: last frostChance of a frost after this date10%50%90%Mar 1Apr 1Apr 15Mar 28Mar 82022: March 152023: March 222024: March 212025: March 222026: March 18Fall at Greenville: chance of a frost before this dateFall, chance of a frost before the date: 10% October 25, 20% October 30, 30% November 1, 40% November 4, 50% November 7, 60% November 10, 70% November 13, 80% November 18, 90% November 25. Observed first fall frost in recent years: 2021 November 14, 2022 October 19, 2023 November 2, 2024 November 23, 2025 November 11.Fall: first frostChance of a frost before this date10%50%90%Nov 1Dec 1Oct 25Nov 7Nov 252021: November 142022: October 192023: November 22024: November 232025: 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
2021incomplete recordNovember 14
2022March 15October 19
2023March 22November 2
2024March 21November 23
2025March 22November 11
2026March 18season not over yet

What these dates mean

The period between the 32°F 50% dates spans 224 days, shaping the primary growing window in Greenville. The 50% date in spring is March 28, which represents an even chance that a light frost will occur later in the season; the 50% date in fall is November 7, marking an even chance that a light frost will occur earlier.

For a cautious planting plan, tender crops are typically set out after the April 15 spring date, which carries only a 10 % chance of a later frost, and are harvested by the October 25 fall date, which holds only a 10 % chance that a frost has arrived earlier. A hard frost at 28 °F can damage plant tissue that survives a light frost at 32 °F, making it a more serious threat.

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 25" 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 Greenville, ALNumbered nearest stations: 1 — Evergreen, AL — 31 mi; 2 — Montgomery, AL — 37 mi; 3 — Troy, AL — 37 mi; 4 — Brewton, AL — 52 mi; 5 — Marion Junction, AL — 60 mi.25 mi · 40 km1. Evergreen, AL — 31 mi12. Montgomery, AL — 37 mi23. Troy, AL — 37 mi34. Brewton, AL — 52 mi45. Marion Junction, AL — 60 mi5
  1. Evergreen, AL 31 mi (50 km)
  2. Montgomery, AL 37 mi (60 km)
  3. Troy, AL 37 mi (60 km)
  4. Brewton, AL 52 mi (83 km)
  5. Marion Junction, AL 60 mi (96 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: 31.79, -86.6086.