U.S. Frost Dates by Weather Station

NOAA station USC00091266 · Georgia

Frost Dates for Brooklet, GA

NOAA weather station Brooklet 1 W (USC00091266), Georgia · elevation 180 ft (55 m) · hardiness zone 9a*

  • Lower-risk planting dateafter March 27only 1 spring in 10 still has a frost later
  • Typical last frostMarch 750% chance of a frost after it
  • Typical first fall frostNovember 2150% chance of a frost before it
  • Frost-free season257 daystypical year, 32°F
  • Hardiness zone9acalculated*

The year at a glance

Frost season at Brooklet, GASpring: a frost after February 11 in 9 years out of 10, after March 7 in half of the years, after March 27 in 1 year out of 10. Fall: the first frost comes before November 5 in 1 year out of 10, before November 21 in half of the years, before December 15 in 9 years out of 10. Typical frost-free season: 257 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Mar 7First frost ~Nov 21Frost season at Brooklet, GASpring: a frost after February 11 in 9 years out of 10, after March 7 in half of the years, after March 27 in 1 year out of 10. Fall: the first frost comes before November 5 in 1 year out of 10, before November 21 in half of the years, before December 15 in 9 years out of 10. Typical frost-free season: 257 days.JFMAMJJASONDLast frost ~Mar 7First frost ~Nov 21
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)March 27November 5
50% (typical)March 7November 21
90% (likely)February 11December 15
Frost-free season (32°F, 50% chance)
257 days
Hard frost (28°F), last in spring, 50% chance after
February 22
Hard frost (28°F), first in fall, 50% chance before
December 8

The last 15 years (2006–2020 normals)

Typical last frost March 6 (1 day earlier than the 30-year normal), typical first fall frost November 19 (2 days earlier). Frost-free season 260 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 Brooklet: chance of a frost after this dateSpring, chance of a frost after the date: 10% March 27, 20% March 20, 30% March 16, 40% March 12, 50% March 7, 60% March 3, 70% February 28, 80% February 21, 90% February 11. Observed last spring frost in recent years: 2021 April 4, 2022 March 15, 2023 March 16, 2024 February 20, 2025 March 3, 2026 March 18.Spring: last frostChance of a frost after this date10%50%90%Feb 1Mar 1Apr 1Mar 27Mar 7Feb 112021: April 42022: March 152023: March 162024: February 202025: March 32026: March 18Fall at Brooklet: chance of a frost before this dateFall, chance of a frost before the date: 10% November 5, 20% November 10, 30% November 14, 40% November 18, 50% November 21, 60% November 25, 70% November 30, 80% December 5, 90% December 15. Observed first fall frost in recent years: 2021 November 24, 2022 November 18, 2023 November 29, 2024 December 1, 2025 November 11.Fall: first frostChance of a frost before this date10%50%90%Nov 1Dec 1Nov 5Nov 21Dec 152021: November 242022: November 182023: November 292024: December 12025: 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 4November 24
2022March 15November 18
2023March 16November 29
2024February 20December 1
2025March 3November 11
2026March 18season not over yet

What these dates mean

March 27 is the cautious spring date for light frost in Brooklet; with only a 10 % chance of a frost occurring later, it lets a gardener set out tender vegetables and annuals with minimal risk. The corresponding cautious fall date is November 5, when there is just a 10 % chance that a frost has already arrived, marking a good time to finish harvesting tender crops.

The 50 % dates represent the point at which frost is equally likely to have happened or not. For light frost the median dates are March 7 in spring and November 21 in fall. For hard frost (28 °F) the median dates are February 22 and December 8. Knowing these dates helps a gardener gauge the balance of risk around the season.

A hard frost matters more than a light frost because the lower temperature can damage plant tissue that survives a 32 °F frost.

How to read the probabilities

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

  • Spring: "10% after March 27" 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 5" 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 Brooklet, GANumbered nearest stations: 1 — Savannah, GA — 32 mi; 2 — Fort Stewart, GA — 35 mi; 3 — Midville Experiment Station, GA — 47 mi; 4 — Yemassee, SC — 53 mi; 5 — Louisville, GA — 61 mi.GA25 mi · 40 km1. Savannah, GA — 32 mi12. Fort Stewart, GA — 35 mi23. Midville Experiment Station, GA — 47 mi34. Yemassee, SC — 53 mi45. Louisville, GA — 61 mi5
  1. Savannah, GA 32 mi (52 km)
  2. Fort Stewart, GA 35 mi (57 km)
  3. Midville Experiment Station, GA 47 mi (75 km)
  4. Yemassee, SC 53 mi (85 km)
  5. Louisville, GA 61 mi (97 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: 32.3767, -81.6739.