U.S. Frost Dates by Weather Station

NOAA station USC00095314 · Georgia

Frost Dates for Louisville, GA

NOAA weather station Louisville 1 E (USC00095314), Georgia · elevation 322 ft (98 m) · hardiness zone 8b*

  • Lower-risk planting dateafter April 9only 1 spring in 10 still has a frost later
  • Typical last frostMarch 2550% chance of a frost after it
  • Typical first fall frostNovember 750% chance of a frost before it
  • Frost-free season227 daystypical year, 32°F
  • Hardiness zone8bcalculated*

The year at a glance

Frost season at Louisville, GASpring: a frost after March 6 in 9 years out of 10, after March 25 in half of the years, after April 9 in 1 year out of 10. Fall: the first frost comes before October 25 in 1 year out of 10, before November 7 in half of the years, before November 26 in 9 years out of 10. Typical frost-free season: 227 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Mar 25First frost ~Nov 7Frost season at Louisville, GASpring: a frost after March 6 in 9 years out of 10, after March 25 in half of the years, after April 9 in 1 year out of 10. Fall: the first frost comes before October 25 in 1 year out of 10, before November 7 in half of the years, before November 26 in 9 years out of 10. Typical frost-free season: 227 days.JFMAMJJASONDLast frost ~Mar 25First frost ~Nov 7
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)April 9October 25
50% (typical)March 25November 7
90% (likely)March 6November 26
Frost-free season (32°F, 50% chance)
227 days
Hard frost (28°F), last in spring, 50% chance after
March 12
Hard frost (28°F), first in fall, 50% chance before
November 20

The last 15 years (2006–2020 normals)

Typical last frost March 24 (1 day earlier than the 30-year normal), typical first fall frost November 8 (1 day later). Frost-free season 231 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 Louisville: chance of a frost after this dateSpring, chance of a frost after the date: 10% April 9, 20% April 4, 30% March 31, 40% March 28, 50% March 25, 60% March 21, 70% March 18, 80% March 13, 90% March 6. Observed last spring frost in recent years: 2021 April 4, 2022 April 10, 2023 March 22.Spring: last frostChance of a frost after this date10%50%90%Mar 1Apr 1Apr 9Mar 25Mar 62021: April 42022: April 102023: March 22Fall at Louisville: chance of a frost before this dateFall, chance of a frost before the date: 10% October 25, 20% October 30, 30% November 2, 40% November 4, 50% November 7, 60% November 10, 70% November 15, 80% November 19, 90% November 26. Observed first fall frost in recent years: 2021 November 14, 2022 October 19, 2023 November 2.Fall: first frostChance of a frost before this date10%50%90%Nov 1Dec 1Oct 25Nov 7Nov 262021: November 142022: October 192023: November 2
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 14
2022April 10October 19
2023March 22November 2
2024incomplete recordincomplete record
2025incomplete recordincomplete record
2026incomplete recordseason not over yet

What these dates mean

Setting out tender crops on March 6 in Louisville carries a 90% chance of a light frost later, so it is a gamble. The cautious spring date for tender crops is April 9, when only a 10% chance of a later frost remains.

The 50% date for light frost in spring is March 25, meaning there is a 50% chance of a light frost later than this date; in fall the equivalent 50% date is November 7, meaning a 50% chance of a light frost earlier than this date. For a cautious fall plan, October 25 is used, as it has only a 10% chance that a frost has arrived earlier.

A hard frost at 28°F, represented by the 50% dates March 12 and November 20, can damage plants that survive a 32°F light frost, so it matters more.

How to read the probabilities

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

  • Spring: "10% after April 9" 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 25" 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 Louisville, GANumbered nearest stations: 1 — Midville Experiment Station, GA — 14 mi; 2 — near Augusta, GA — 35 mi; 3 — Appling, GA — 38 mi; 4 — Brooklet, GA — 61 mi; 5 — Calhoun Falls, SC — 75 mi.GASC50 mi · 80 km1. Midville Experiment Station, GA — 14 mi12. near Augusta, GA — 35 mi23. Appling, GA — 38 mi34. Brooklet, GA — 61 mi45. Calhoun Falls, SC — 75 mi5
  1. Midville Experiment Station, GA 14 mi (22 km)
  2. near Augusta, GA 35 mi (56 km)
  3. Appling, GA 38 mi (61 km)
  4. Brooklet, GA 61 mi (97 km)
  5. Calhoun Falls, SC 75 mi (121 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: 33.0125, -82.3914.