U.S. Frost Dates by Weather Station

NOAA station USW00013980 · Kansas

Frost Dates for Anthony, KS

NOAA weather station Anthony (USW00013980), Kansas · elevation 1340 ft (408 m) · hardiness zone 7a*

  • Lower-risk planting dateafter April 23only 1 spring in 10 still has a frost later
  • Typical last frostApril 950% chance of a frost after it
  • Typical first fall frostOctober 3050% chance of a frost before it
  • Frost-free season205 daystypical year, 32°F
  • Hardiness zone7acalculated*

The year at a glance

Frost season at Anthony, KSSpring: a frost after March 26 in 9 years out of 10, after April 9 in half of the years, after April 23 in 1 year out of 10. Fall: the first frost comes before October 17 in 1 year out of 10, before October 30 in half of the years, before November 12 in 9 years out of 10. Typical frost-free season: 205 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Apr 9First frost ~Oct 30Frost season at Anthony, KSSpring: a frost after March 26 in 9 years out of 10, after April 9 in half of the years, after April 23 in 1 year out of 10. Fall: the first frost comes before October 17 in 1 year out of 10, before October 30 in half of the years, before November 12 in 9 years out of 10. Typical frost-free season: 205 days.JFMAMJJASONDLast frost ~Apr 9First frost ~Oct 30
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 23October 17
50% (typical)April 9October 30
90% (likely)March 26November 12
Frost-free season (32°F, 50% chance)
205 days
Hard frost (28°F), last in spring, 50% chance after
March 31
Hard frost (28°F), first in fall, 50% chance before
November 7

The last 15 years (2006–2020 normals)

Typical last frost April 9 (same as the 30-year normal), typical first fall frost November 1 (2 days later). Frost-free season 204 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 Anthony: chance of a frost after this dateSpring, chance of a frost after the date: 10% April 23, 20% April 19, 30% April 15, 40% April 12, 50% April 9, 60% April 6, 70% April 3, 80% March 31, 90% March 26. Observed last spring frost in recent years: 2021 April 22, 2022 April 10, 2023 April 7, 2024 March 29, 2025 March 21, 2026 March 18.Spring: last frostChance of a frost after this date10%50%90%Apr 1May 1Apr 23Apr 9Mar 262021: April 222022: April 102023: April 72024: March 292025: March 212026: March 18Fall at Anthony: chance of a frost before this dateFall, chance of a frost before the date: 10% October 17, 20% October 22, 30% October 25, 40% October 27, 50% October 30, 60% November 1, 70% November 4, 80% November 8, 90% November 12. Observed first fall frost in recent years: 2021 November 13, 2022 October 19, 2023 October 29, 2024 November 22, 2025 November 10.Fall: first frostChance of a frost before this date10%50%90%Nov 1Oct 17Oct 30Nov 122021: November 132022: October 192023: October 292024: November 222025: 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 22November 13
2022April 10October 19
2023April 7October 29
2024March 29November 22
2025March 21November 10
2026March 18season not over yet

What these dates mean

April 23 is the cautious spring date for light frost in Anthony; there is only a 10 % chance of frost after that day, so a gardener can plan to set out tender crops with relatively low risk. The 50 % date of April 9 marks the point at which frost is equally likely to occur later or not, giving a clear reference for risk.

In the fall, October 17 is the cautious date, carrying a 10 % chance that frost has already arrived, allowing a gardener to finish harvesting tender crops before frost becomes probable. The 50 % date of October 30 shows even odds for frost earlier, while the hard-frost 50 % dates of March 31 (spring) and November 7 (fall) indicate when a 28 °F frost is equally likely. A hard frost matters more because temperatures at 28 °F can cause more severe damage to plants than a light frost at 32 °F.

How to read the probabilities

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

  • Spring: "10% after April 23" 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 17" 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 Anthony, KSNumbered nearest stations: 1 — Wellington, KS — 34 mi; 2 — Helena, OK — 45 mi; 3 — Wichita, KS — 47 mi; 4 — Enid, OK — 52 mi; 5 — Hutchinson, KS — 54 mi.KSOK50 mi · 80 km1. Wellington, KS — 34 mi12. Helena, OK — 45 mi23. Wichita, KS — 47 mi34. Enid, OK — 52 mi45. Hutchinson, KS — 54 mi5
  1. Wellington, KS 34 mi (55 km)
  2. Helena, OK 45 mi (72 km)
  3. Wichita, KS 47 mi (76 km)
  4. Enid, OK 52 mi (83 km)
  5. Hutchinson, KS 54 mi (86 km)

Sources

* Hardiness zone 7a: zone derived from PRISM 2023 grid at the station location (not the official USDA map). Source data: PRISM Group, Oregon State University.

Station coordinates: 37.155, -98.0283.