U.S. Frost Dates by Weather Station

NOAA station USW00013957 · Louisiana

Frost Dates for Shreveport, LA

NOAA weather station Shreveport (USW00013957), Louisiana · elevation 273 ft (83 m) · hardiness zone 8b*

  • Lower-risk planting dateafter March 29only 1 spring in 10 still has a frost later
  • Typical last frostMarch 950% chance of a frost after it
  • Typical first fall frostNovember 1850% chance of a frost before it
  • Frost-free season255 daystypical year, 32°F
  • Hardiness zone8bcalculated*

The year at a glance

Frost season at Shreveport, LASpring: a frost after February 16 in 9 years out of 10, after March 9 in half of the years, after March 29 in 1 year out of 10. Fall: the first frost comes before November 2 in 1 year out of 10, before November 18 in half of the years, before December 5 in 9 years out of 10. Typical frost-free season: 255 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Mar 9First frost ~Nov 18Frost season at Shreveport, LASpring: a frost after February 16 in 9 years out of 10, after March 9 in half of the years, after March 29 in 1 year out of 10. Fall: the first frost comes before November 2 in 1 year out of 10, before November 18 in half of the years, before December 5 in 9 years out of 10. Typical frost-free season: 255 days.JFMAMJJASONDLast frost ~Mar 9First frost ~Nov 18
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 29November 2
50% (typical)March 9November 18
90% (likely)February 16December 5
Frost-free season (32°F, 50% chance)
255 days
Hard frost (28°F), last in spring, 50% chance after
February 22
Hard frost (28°F), first in fall, 50% chance before
December 1

The last 15 years (2006–2020 normals)

Typical last frost March 6 (3 days earlier than the 30-year normal), typical first fall frost November 19 (1 day later). Frost-free season 258 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 Shreveport: chance of a frost after this dateSpring, chance of a frost after the date: 10% March 29, 20% March 21, 30% March 17, 40% March 13, 50% March 9, 60% March 4, 70% February 28, 80% February 23, 90% February 16. Observed last spring frost in recent years: 2021 February 21, 2022 March 13, 2023 March 20, 2024 February 19, 2025 February 21, 2026 March 17.Spring: last frostChance of a frost after this date10%50%90%Mar 1Apr 1Mar 29Mar 9Feb 162021: February 212022: March 132023: March 202024: February 192025: February 212026: March 17Fall at Shreveport: chance of a frost before this dateFall, chance of a frost before the date: 10% November 2, 20% November 6, 30% November 11, 40% November 15, 50% November 18, 60% November 22, 70% November 26, 80% December 1, 90% December 5. Observed first fall frost in recent years: 2021 December 12, 2022 November 13, 2023 December 11, 2024 November 30, 2025 December 14.Fall: first frostChance of a frost before this date10%50%90%Nov 1Dec 1Nov 2Nov 18Dec 52021: December 122022: November 132023: December 112024: November 302025: December 14
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
2021February 21December 12
2022March 13November 13
2023March 20December 11
2024February 19November 30
2025February 21December 14
2026March 17season not over yet

What these dates mean

The cautious fall date in Shreveport for finishing the harvest is November 2, when there is only a 10 % chance that a light frost has arrived.

For tender crops in spring the cautious date is March 29, the 10 % risk threshold; the 50 % date is March 9, indicating an even chance of a frost later than that day. The 90 % risk date is February 16, a gamble for early planting. The interval between the 32°F 50% dates—March 9 and November 18—covers 255 days of roughly equal frost risk.

A hard frost at 28 °F is more damaging than a light frost at 32 °F because it can kill tissue that survives a light freeze. The median hard-frost dates are February 22 in spring and December 1 in fall, giving a reference for when a 50 % chance of a hard freeze exists.

How to read the probabilities

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

  • Spring: "10% after March 29" 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 2" 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 Shreveport, LANumbered nearest stations: 1 — near Bossier City, LA — 12 mi; 2 — Marshall, TX — 29 mi; 3 — Minden, LA — 34 mi; 4 — Carthage, TX — 35 mi; 5 — near Longview, TX — 48 mi.TX25 mi · 40 km1. near Bossier City, LA — 12 mi12. Marshall, TX — 29 mi23. Minden, LA — 34 mi34. Carthage, TX — 35 mi45. near Longview, TX — 48 mi5
  1. near Bossier City, LA 12 mi (19 km)
  2. Marshall, TX 29 mi (46 km)
  3. Minden, LA 34 mi (54 km)
  4. Carthage, TX 35 mi (57 km)
  5. near Longview, TX 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: 32.4506, -93.8411.