U.S. Frost Dates by Weather Station

NOAA station USC00340256 · Oklahoma

Frost Dates for Antlers, OK

NOAA weather station Antlers (USC00340256), Oklahoma · elevation 470 ft (143 m) · hardiness zone 8a*

  • Lower-risk planting dateafter April 20only 1 spring in 10 still has a frost later
  • Typical last frostApril 350% chance of a frost after it
  • Typical first fall frostNovember 150% chance of a frost before it
  • Frost-free season213 daystypical year, 32°F
  • Hardiness zone8acalculated*

The year at a glance

Frost season at Antlers, OKSpring: a frost after March 15 in 9 years out of 10, after April 3 in half of the years, after April 20 in 1 year out of 10. Fall: the first frost comes before October 18 in 1 year out of 10, before November 1 in half of the years, before November 17 in 9 years out of 10. Typical frost-free season: 213 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Apr 3First frost ~Nov 1Frost season at Antlers, OKSpring: a frost after March 15 in 9 years out of 10, after April 3 in half of the years, after April 20 in 1 year out of 10. Fall: the first frost comes before October 18 in 1 year out of 10, before November 1 in half of the years, before November 17 in 9 years out of 10. Typical frost-free season: 213 days.JFMAMJJASONDLast frost ~Apr 3First frost ~Nov 1
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 27 years of NOAA records (1991–2020 normals)
ChanceLast frost in spring afterFirst frost in fall before
10% (unlikely)April 20October 18
50% (typical)April 3November 1
90% (likely)March 15November 17
Frost-free season (32°F, 50% chance)
213 days
Hard frost (28°F), last in spring, 50% chance after
March 20
Hard frost (28°F), first in fall, 50% chance before
November 11

The last 15 years (2006–2020 normals)

Typical last frost April 2 (1 day earlier than the 30-year normal), typical first fall frost November 1. Frost-free season 213 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 Antlers: chance of a frost after this dateSpring, chance of a frost after the date: 10% April 20, 20% April 14, 30% April 10, 40% April 6, 50% April 3, 60% March 31, 70% March 28, 80% March 22, 90% March 15. Observed last spring frost in recent years: 2021 April 22, 2022 April 10, 2023 March 26, 2024 March 28, 2025 March 22, 2026 March 18.Spring: last frostChance of a frost after this date10%50%90%Mar 1Apr 1May 1Apr 20Apr 3Mar 152021: April 222022: April 102023: March 262024: March 282025: March 222026: March 18Fall at Antlers: chance of a frost before this dateFall, chance of a frost before the date: 10% October 18, 20% October 23, 30% October 27, 40% October 31, 50% November 1, 60% November 4, 70% November 7, 80% November 11, 90% November 17. Observed first fall frost in recent years: 2021 November 6, 2022 October 19, 2023 October 31, 2024 October 17, 2025 November 2.Fall: first frostChance of a frost before this date10%50%90%Nov 1Dec 1Oct 18Nov 1Nov 172021: November 62022: October 192023: October 312024: October 172025: 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 22November 6
2022April 10October 19
2023March 26October 31
2024March 28October 17
2025March 22November 2
2026March 18season not over yet

What these dates mean

October 18 marks the cautious fall date in Antlers for finishing the harvest of tender crops, when there is only a 10% chance that a light frost has already arrived.

For a cautious spring plan, the light-frost date with a 10% chance of a later frost is April 20, while the 90% gamble date is March 15. The 50% date is April 3, indicating equal odds of a light frost later than this day. The hard-frost 50% dates are March 20, with a 50% chance of a hard frost later than this day, and November 11, with a 50% chance of a hard frost earlier than this day.

Hard frost at 28°F can injure or kill plants that would otherwise survive the milder 32°F light frost, so it is a more critical threshold for gardeners.

How to read the probabilities

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

  • Spring: "10% after April 20" 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 18" 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 Antlers, OKNumbered nearest stations: 1 — Paris, TX — 38 mi; 2 — McAlester, OK — 47 mi; 3 — Madill, OK — 67 mi; 4 — Sherman, TX — 69 mi; 5 — Dequeen, AR — 73 mi.OKAR25 mi · 40 km1. Paris, TX — 38 mi12. McAlester, OK — 47 mi23. Madill, OK — 67 mi34. Sherman, TX — 69 mi45. Dequeen, AR — 73 mi5
  1. Paris, TX 38 mi (61 km)
  2. McAlester, OK 47 mi (75 km)
  3. Madill, OK 67 mi (107 km)
  4. Sherman, TX 69 mi (111 km)
  5. Dequeen, AR 73 mi (118 km)

Sources

* Hardiness zone 8a: zone derived from PRISM 2023 grid at the station location (not the official USDA map). Source data: PRISM Group, Oregon State University.

Station coordinates: 34.2208, -95.615.