U.S. Frost Dates by Weather Station

NOAA station USW00003822 · Georgia

Frost Dates for Savannah, GA

NOAA weather station Savannah International Airport (USW00003822), Georgia · elevation 46 ft (14 m) · hardiness zone 9a*

  • Lower-risk planting dateafter March 25only 1 spring in 10 still has a frost later
  • Typical last frostMarch 250% chance of a frost after it
  • Typical first fall frostNovember 3050% chance of a frost before it
  • Frost-free season270 daystypical year, 32°F
  • Hardiness zone9acalculated*

The year at a glance

Frost season at Savannah, GASpring: a frost after February 4 in 9 years out of 10, after March 2 in half of the years, after March 25 in 1 year out of 10. Fall: the first frost comes before November 11 in 1 year out of 10, before November 30 in half of the years, before December 28 in 9 years out of 10. Typical frost-free season: 270 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Mar 2First frost ~Nov 30Frost season at Savannah, GASpring: a frost after February 4 in 9 years out of 10, after March 2 in half of the years, after March 25 in 1 year out of 10. Fall: the first frost comes before November 11 in 1 year out of 10, before November 30 in half of the years, before December 28 in 9 years out of 10. Typical frost-free season: 270 days.JFMAMJJASONDLast frost ~Mar 2First frost ~Nov 30
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 29 years of NOAA records (1991–2020 normals)
ChanceLast frost in spring afterFirst frost in fall before
10% (unlikely)March 25November 11
50% (typical)March 2November 30
90% (likely)February 4December 28
Frost-free season (32°F, 50% chance)
270 days
Hard frost (28°F), last in spring, 50% chance after
February 13
Hard frost (28°F), first in fall, 50% chance before
December 22

The last 15 years (2006–2020 normals)

Typical last frost March 5 (3 days later than the 30-year normal), typical first fall frost November 25 (5 days earlier). Frost-free season 268 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 Savannah: chance of a frost after this dateSpring, chance of a frost after the date: 10% March 25, 20% March 17, 30% March 12, 40% March 6, 50% March 2, 60% February 26, 70% February 21, 80% February 13, 90% February 4. Observed last spring frost in recent years: 2021 April 3, 2022 March 14, 2023 January 28, 2024 January 22, 2025 March 3, 2026 March 18.Spring: last frostChance of a frost after this date10%50%90%Feb 1Mar 1Apr 1Mar 25Mar 2Feb 42021: April 32022: March 142023: January 282024: January 222025: March 32026: March 18Fall at Savannah: chance of a frost before this dateFall, chance of a frost before the date: 10% November 11, 20% November 17, 30% November 21, 40% November 25, 50% November 30, 60% December 3, 70% December 8, 80% December 16, 90% December 28. Observed first fall frost in recent years: 2021 November 24, 2022 November 18, 2023 November 29, 2024 November 30, 2025 November 11.Fall: first frostChance of a frost before this date10%50%90%Nov 1Dec 1Jan 1Nov 11Nov 30Dec 282021: November 242022: November 182023: November 292024: 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 3November 24
2022March 14November 18
2023January 28November 29
2024January 22November 30
2025March 3November 11
2026March 18season not over yet

What these dates mean

March 25 is the cautious spring date, with only a 10 % chance of a light frost later; it lets a gardener schedule the first planting of tender crops. The 50% date is March 2, meaning there is an even chance of a light frost on either side of that day, while the hard-frost median for spring is February 13.

In the fall, November 11 is the cautious date, carrying a 10 % chance of a light frost earlier and marking the latest reliable time to finish harvesting tender crops; the 50% date is November 30, and the hard-frost median for fall is December 22. For a Savannah gardener, the 50% dates indicate the point where the odds of a light frost are balanced, helping to gauge risk when planning around the cautious dates. Hard frost at 28 °F can injure plants that would 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 25" 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 11" 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 Savannah, GANumbered nearest stations: 1 — Fort Stewart, GA — 30 mi; 2 — Brooklet, GA — 32 mi; 3 — Yemassee, SC — 45 mi; 4 — Midville Experiment Station, GA — 78 mi; 5 — Bamberg, SC — 81 mi.GASC25 mi · 40 km1. Fort Stewart, GA — 30 mi12. Brooklet, GA — 32 mi23. Yemassee, SC — 45 mi34. Midville Experiment Station, GA — 78 mi45. Bamberg, SC — 81 mi5
  1. Fort Stewart, GA 30 mi (49 km)
  2. Brooklet, GA 32 mi (52 km)
  3. Yemassee, SC 45 mi (72 km)
  4. Midville Experiment Station, GA 78 mi (126 km)
  5. Bamberg, SC 81 mi (130 km)

Sources

* Hardiness zone 9a: zone derived from PRISM 2023 grid at the station location (not the official USDA map). Source data: PRISM Group, Oregon State University.

Station coordinates: 32.13, -81.21.