U.S. Frost Dates by Weather Station

NOAA station USC00164355 · Louisiana

Frost Dates for Homer, LA

NOAA weather station Homer 1 N (USC00164355), Louisiana · elevation 215 ft (66 m) · hardiness zone 8b*

  • Lower-risk planting dateafter April 16only 1 spring in 10 still has a frost later
  • Typical last frostMarch 3050% chance of a frost after it
  • Typical first fall frostNovember 650% chance of a frost before it
  • Frost-free season221 daystypical year, 32°F
  • Hardiness zone8bcalculated*

The year at a glance

Frost season at Homer, LASpring: a frost after March 9 in 9 years out of 10, after March 30 in half of the years, after April 16 in 1 year out of 10. Fall: the first frost comes before October 23 in 1 year out of 10, before November 6 in half of the years, before November 22 in 9 years out of 10. Typical frost-free season: 221 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Mar 30First frost ~Nov 6Frost season at Homer, LASpring: a frost after March 9 in 9 years out of 10, after March 30 in half of the years, after April 16 in 1 year out of 10. Fall: the first frost comes before October 23 in 1 year out of 10, before November 6 in half of the years, before November 22 in 9 years out of 10. Typical frost-free season: 221 days.JFMAMJJASONDLast frost ~Mar 30First frost ~Nov 6
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 28 years of NOAA records (1991–2020 normals)
ChanceLast frost in spring afterFirst frost in fall before
10% (unlikely)April 16October 23
50% (typical)March 30November 6
90% (likely)March 9November 22
Frost-free season (32°F, 50% chance)
221 days
Hard frost (28°F), last in spring, 50% chance after
March 14
Hard frost (28°F), first in fall, 50% chance before
November 16

The last 15 years (2006–2020 normals)

Typical last frost March 31 (1 day later than the 30-year normal), typical first fall frost November 4 (2 days earlier). Frost-free season 221 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 Homer: chance of a frost after this dateSpring, chance of a frost after the date: 10% April 16, 20% April 9, 30% April 5, 40% April 2, 50% March 30, 60% March 26, 70% March 22, 80% March 16, 90% March 9. Observed last spring frost in recent years: 2021 April 2, 2022 April 9, 2023 March 21, 2024 March 20, 2025 March 22, 2026 March 18.Spring: last frostChance of a frost after this date10%50%90%Mar 1Apr 1Apr 16Mar 30Mar 92021: April 22022: April 92023: March 212024: March 202025: March 222026: March 18Fall at Homer: chance of a frost before this dateFall, chance of a frost before the date: 10% October 23, 20% October 29, 30% November 1, 40% November 3, 50% November 6, 60% November 8, 70% November 11, 80% November 16, 90% November 22. Observed first fall frost in recent years: 2021 November 5, 2022 October 19, 2023 November 1, 2024 October 17, 2025 November 10.Fall: first frostChance of a frost before this date10%50%90%Nov 1Dec 1Oct 23Nov 6Nov 222021: November 52022: October 192023: November 12024: October 172025: November 10
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 2November 5
2022April 9October 19
2023March 21November 1
2024March 20October 17
2025March 22November 10
2026March 18season not over yet

What these dates mean

April 16 is the cautious spring date for tender crops in Homer, reflecting a 10 % chance that a light frost will occur later. Gardeners can schedule putting out tender seedlings after this date with only a modest risk of frost damage.

The median light-frost date in spring is March 30, meaning the chance of frost later than that day is 50 %. In fall, the median date is November 6, giving a 50 % chance of a frost occurring earlier. The cautious fall date is October 23, when there is only a 10 % chance a light frost has already arrived, providing a benchmark for finishing harvest of tender crops. Hard-frost median dates are March 14 in spring and November 16 in fall; these indicate when a 28 °F frost is equally likely to have happened or not.

Because a hard frost at 28 °F can damage plant tissue that usually survives a light frost at 32 °F, it is a more critical threshold for growers.

How to read the probabilities

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

  • Spring: "10% after April 16" 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 Homer, LANumbered nearest stations: 1 — Minden, LA — 20 mi; 2 — Bienville, LA — 31 mi; 3 — near El Dorado, AR — 32 mi; 4 — near Bossier City, LA — 43 mi; 5 — Calion Lock and Dam, AR — 48 mi.TX25 mi · 40 km1. Minden, LA — 20 mi12. Bienville, LA — 31 mi23. near El Dorado, AR — 32 mi34. near Bossier City, LA — 43 mi45. Calion Lock and Dam, AR — 48 mi5
  1. Minden, LA 20 mi (31 km)
  2. Bienville, LA 31 mi (50 km)
  3. near El Dorado, AR 32 mi (51 km)
  4. near Bossier City, LA 43 mi (69 km)
  5. Calion Lock and Dam, AR 48 mi (77 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: 32.81, -93.0625.