U.S. Frost Dates by Weather Station

NOAA station USC00012758 · Alabama

Frost Dates for Evergreen, AL

NOAA weather station Evergreen (USC00012758), Alabama · elevation 290 ft (88 m) · hardiness zone 8b*

  • Lower-risk planting dateafter March 31only 1 spring in 10 still has a frost later
  • Typical last frostMarch 1350% chance of a frost after it
  • Typical first fall frostNovember 1950% chance of a frost before it
  • Frost-free season253 daystypical year, 32°F
  • Hardiness zone8bcalculated*

The year at a glance

Frost season at Evergreen, ALSpring: a frost after February 18 in 9 years out of 10, after March 13 in half of the years, after March 31 in 1 year out of 10. Fall: the first frost comes before November 2 in 1 year out of 10, before November 19 in half of the years, before December 9 in 9 years out of 10. Typical frost-free season: 253 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Mar 13First frost ~Nov 19Frost season at Evergreen, ALSpring: a frost after February 18 in 9 years out of 10, after March 13 in half of the years, after March 31 in 1 year out of 10. Fall: the first frost comes before November 2 in 1 year out of 10, before November 19 in half of the years, before December 9 in 9 years out of 10. Typical frost-free season: 253 days.JFMAMJJASONDLast frost ~Mar 13First frost ~Nov 19
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 27 years of NOAA records (1991–2020 normals)
ChanceLast frost in spring afterFirst frost in fall before
10% (unlikely)March 31November 2
50% (typical)March 13November 19
90% (likely)February 18December 9
Frost-free season (32°F, 50% chance)
253 days
Hard frost (28°F), last in spring, 50% chance after
February 28
Hard frost (28°F), first in fall, 50% chance before
December 3

The last 15 years (2006–2020 normals)

Typical last frost March 10 (3 days earlier than the 30-year normal), typical first fall frost November 17 (2 days earlier). Frost-free season 251 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 Evergreen: chance of a frost after this dateSpring, chance of a frost after the date: 10% March 31, 20% March 25, 30% March 21, 40% March 17, 50% March 13, 60% March 8, 70% March 3, 80% February 26, 90% February 18.Spring: last frostChance of a frost after this date10%50%90%Mar 1Apr 1Mar 31Mar 13Feb 18Fall at Evergreen: chance of a frost before this dateFall, chance of a frost before the date: 10% November 2, 20% November 7, 30% November 11, 40% November 15, 50% November 19, 60% November 23, 70% November 28, 80% December 2, 90% December 9.Fall: first frostChance of a frost before this date10%50%90%Nov 1Dec 1Nov 2Nov 19Dec 9
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.

What these dates mean

The 253 days between the 32°F 50% dates in Evergreen frame the period in which light frosts are most uncertain. The 50% dates—March 13 in spring and November 19 in fall—mark the moment when a light frost is as likely as not. In spring, the cautious date for setting out tender crops is March 31, which carries only a 10% chance of a later frost; planting on February 18 would be a gamble with a 90% chance of frost. In fall, the cautious date to finish harvesting tender crops is November 2, also a 10% chance of an earlier frost, while December 9 would be a high-risk choice with a 90% chance of frost.

The hard-frost median dates are February 28 in spring and December 3 in fall; a hard frost at 28°F can damage plants that would otherwise survive a light frost at 32°F.

How to read the probabilities

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

  • Spring: "10% after March 31" 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 2" 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 Evergreen, ALNumbered nearest stations: 1 — Brewton, AL — 22 mi; 2 — Greenville, AL — 31 mi; 3 — Atmore, AL — 34 mi; 4 — near Crestview, FL — 53 mi; 5 — Jackson, AL — 58 mi.ALFL25 mi · 40 km1. Brewton, AL — 22 mi12. Greenville, AL — 31 mi23. Atmore, AL — 34 mi34. near Crestview, FL — 53 mi45. Jackson, AL — 58 mi5
  1. Brewton, AL 22 mi (35 km)
  2. Greenville, AL 31 mi (50 km)
  3. Atmore, AL 34 mi (55 km)
  4. near Crestview, FL 53 mi (85 km)
  5. Jackson, AL 58 mi (93 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: 31.445, -86.9533.