U.S. Frost Dates by Weather Station

NOAA station USC00091640 · Georgia

Frost Dates for Carrollton, GA

NOAA weather station Carrollton (USC00091640), Georgia · elevation 995 ft (303 m) · hardiness zone 8a*

  • Lower-risk planting dateafter April 12only 1 spring in 10 still has a frost later
  • Typical last frostMarch 2850% chance of a frost after it
  • Typical first fall frostNovember 550% chance of a frost before it
  • Frost-free season222 daystypical year, 32°F
  • Hardiness zone8acalculated*

The year at a glance

Frost season at Carrollton, GASpring: a frost after March 7 in 9 years out of 10, after March 28 in half of the years, after April 12 in 1 year out of 10. Fall: the first frost comes before October 23 in 1 year out of 10, before November 5 in half of the years, before November 22 in 9 years out of 10. Typical frost-free season: 222 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Mar 28First frost ~Nov 5Frost season at Carrollton, GASpring: a frost after March 7 in 9 years out of 10, after March 28 in half of the years, after April 12 in 1 year out of 10. Fall: the first frost comes before October 23 in 1 year out of 10, before November 5 in half of the years, before November 22 in 9 years out of 10. Typical frost-free season: 222 days.JFMAMJJASONDLast frost ~Mar 28First frost ~Nov 5
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 26 years of NOAA records (1991–2020 normals)
ChanceLast frost in spring afterFirst frost in fall before
10% (unlikely)April 12October 23
50% (typical)March 28November 5
90% (likely)March 7November 22
Frost-free season (32°F, 50% chance)
222 days
Hard frost (28°F), last in spring, 50% chance after
March 15
Hard frost (28°F), first in fall, 50% chance before
November 16

The last 15 years (2006–2020 normals)

Typical last frost March 25 (3 days earlier than the 30-year normal), typical first fall frost November 5. Frost-free season 228 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 Carrollton: chance of a frost after this dateSpring, chance of a frost after the date: 10% April 12, 20% April 6, 30% April 2, 40% March 31, 50% March 28, 60% March 24, 70% March 20, 80% March 16, 90% March 7. Observed last spring frost in recent years: 2021 April 23, 2022 March 15, 2023 March 22, 2024 March 20, 2025 March 5, 2026 March 19.Spring: last frostChance of a frost after this date10%50%90%Mar 1Apr 1Apr 12Mar 28Mar 72021: April 232022: March 152023: March 222024: March 202025: March 52026: March 19Fall at Carrollton: chance of a frost before this dateFall, chance of a frost before the date: 10% October 23, 20% October 28, 30% October 31, 40% November 1, 50% November 5, 60% November 8, 70% November 11, 80% November 16, 90% November 22. Observed first fall frost in recent years: 2021 November 8, 2022 October 20, 2023 November 2, 2024 November 23, 2025 November 11.Fall: first frostChance of a frost before this date10%50%90%Nov 1Dec 1Oct 23Nov 5Nov 222021: November 82022: October 202023: 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
2021April 23November 8
2022March 15October 20
2023March 22November 2
2024March 20November 23
2025March 5November 11
2026March 19season not over yet

What these dates mean

The 222 days between the 50% light-frost dates in Carrollton mark the period when frost risk changes from even odds to a stronger likelihood, with the median dates being March 28 in spring and November 5 in fall. Those dates themselves are not frost dates; they simply indicate the point at which a light frost has a 50 % chance of having occurred or not, giving gardeners a reference for the central part of the frost-free season.

For a cautious plan, the spring date to set out tender crops is April 12, when there is only a 10 % chance of a frost later, while the careful fall date to finish harvesting tender crops is October 23, with a 10 % chance of a frost earlier. A hard frost at 28 °F, recorded with its own 50 % dates of March 15 and November 16, can injure plants that survive the milder 32 °F light frost, so it represents a higher threat level for vulnerable crops.

How to read the probabilities

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

  • Spring: "10% after April 12" 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 23" 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 Carrollton, GANumbered nearest stations: 1 — Heflin, AL — 31 mi; 2 — Cedartown, GA — 33 mi; 3 — Dallas, GA — 34 mi; 4 — near Atlanta, GA — 37 mi; 5 — near Anniston, AL — 45 mi.GAAL25 mi · 40 km1. Heflin, AL — 31 mi12. Cedartown, GA — 33 mi23. Dallas, GA — 34 mi34. near Atlanta, GA — 37 mi45. near Anniston, AL — 45 mi5
  1. Heflin, AL 31 mi (49 km)
  2. Cedartown, GA 33 mi (53 km)
  3. Dallas, GA 34 mi (54 km)
  4. near Atlanta, GA 37 mi (59 km)
  5. near Anniston, AL 45 mi (72 km)

Sources

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

Station coordinates: 33.5972, -85.0806.