U.S. Frost Dates by Weather Station

NOAA station USC00093538 · Georgia

Frost Dates for Fort Stewart, GA

NOAA weather station Fort Stewart (USC00093538), Georgia · elevation 92 ft (28 m) · hardiness zone 9a*

  • Lower-risk planting dateafter March 26only 1 spring in 10 still has a frost later
  • Typical last frostMarch 550% chance of a frost after it
  • Typical first fall frostNovember 2950% chance of a frost before it
  • Frost-free season269 daystypical year, 32°F
  • Hardiness zone9acalculated*

The year at a glance

Frost season at Fort Stewart, GASpring: a frost after February 6 in 9 years out of 10, after March 5 in half of the years, after March 26 in 1 year out of 10. Fall: the first frost comes before November 11 in 1 year out of 10, before November 29 in half of the years, before December 26 in 9 years out of 10. Typical frost-free season: 269 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Mar 5First frost ~Nov 29Frost season at Fort Stewart, GASpring: a frost after February 6 in 9 years out of 10, after March 5 in half of the years, after March 26 in 1 year out of 10. Fall: the first frost comes before November 11 in 1 year out of 10, before November 29 in half of the years, before December 26 in 9 years out of 10. Typical frost-free season: 269 days.JFMAMJJASONDLast frost ~Mar 5First frost ~Nov 29
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 26November 11
50% (typical)March 5November 29
90% (likely)February 6December 26
Frost-free season (32°F, 50% chance)
269 days
Hard frost (28°F), last in spring, 50% chance after
February 17
Hard frost (28°F), first in fall, 50% chance before
December 17

The last 15 years (2006–2020 normals)

Typical last frost March 6 (1 day later than the 30-year normal), typical first fall frost November 23 (6 days earlier). Frost-free season 263 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 Fort Stewart: chance of a frost after this dateSpring, chance of a frost after the date: 10% March 26, 20% March 19, 30% March 14, 40% March 9, 50% March 5, 60% March 1, 70% February 25, 80% February 18, 90% February 6. Observed last spring frost in recent years: 2021 April 3, 2022 March 14, 2023 March 21, 2024 March 21, 2025 March 8, 2026 March 18.Spring: last frostChance of a frost after this date10%50%90%Feb 1Mar 1Apr 1Mar 26Mar 5Feb 62021: April 32022: March 142023: March 212024: March 212025: March 82026: March 18Fall at Fort Stewart: chance of a frost before this dateFall, chance of a frost before the date: 10% November 11, 20% November 16, 30% November 20, 40% November 25, 50% November 29, 60% December 2, 70% December 7, 80% December 14, 90% December 26. Observed first fall frost in recent years: 2021 November 23, 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 1Jan 1Nov 11Nov 29Dec 262021: November 232022: 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
2021April 3November 23
2022March 14October 19
2023March 21November 2
2024March 21November 23
2025March 8November 11
2026March 18season not over yet

What these dates mean

March 26 is the cautious spring date for light frost, allowing a gardener to plan the setting out of tender crops with only a 10 % chance of a later frost.

The median odds for a light frost are shown by the 50% dates: March 5 in spring and November 29 in fall. The 50% hard-frost dates are February 17 and December 17, indicating an even chance of a 28 °F frost. For a low-risk harvest schedule, the cautious fall date is November 11, when there is only a 10 % chance that a frost has already arrived. Planting on February 6 or harvesting through December 26 carries a 90 % chance of a frost and is therefore a gamble.

A hard frost at 28 °F can damage plant tissue that would survive a 32 °F light frost, making it the more consequential threshold.

How to read the probabilities

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

  • Spring: "10% after March 26" 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 Fort Stewart, GANumbered nearest stations: 1 — Savannah, GA — 30 mi; 2 — Brooklet, GA — 35 mi; 3 — Yemassee, SC — 73 mi; 4 — Midville Experiment Station, GA — 78 mi; 5 — Louisville, GA — 91 mi.GA25 mi · 40 km1. Savannah, GA — 30 mi12. Brooklet, GA — 35 mi23. Yemassee, SC — 73 mi34. Midville Experiment Station, GA — 78 mi45. Louisville, GA — 91 mi5
  1. Savannah, GA 30 mi (49 km)
  2. Brooklet, GA 35 mi (57 km)
  3. Yemassee, SC 73 mi (118 km)
  4. Midville Experiment Station, GA 78 mi (125 km)
  5. Louisville, GA 91 mi (146 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: 31.8694, -81.6236.