U.S. Frost Dates by Weather Station

NOAA station USC00465365 · West Virginia

Frost Dates for London Locks, WV

NOAA weather station London Locks (USC00465365), West Virginia · elevation 632 ft (193 m) · hardiness zone 7a*

  • Lower-risk planting dateafter April 23only 1 spring in 10 still has a frost later
  • Typical last frostApril 750% chance of a frost after it
  • Typical first fall frostNovember 450% chance of a frost before it
  • Frost-free season209 daystypical year, 32°F
  • Hardiness zone7acalculated*

The year at a glance

Frost season at London Locks, WVSpring: a frost after March 26 in 9 years out of 10, after April 7 in half of the years, after April 23 in 1 year out of 10. Fall: the first frost comes before October 24 in 1 year out of 10, before November 4 in half of the years, before November 16 in 9 years out of 10. Typical frost-free season: 209 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Apr 7First frost ~Nov 4Frost season at London Locks, WVSpring: a frost after March 26 in 9 years out of 10, after April 7 in half of the years, after April 23 in 1 year out of 10. Fall: the first frost comes before October 24 in 1 year out of 10, before November 4 in half of the years, before November 16 in 9 years out of 10. Typical frost-free season: 209 days.JFMAMJJASONDLast frost ~Apr 7First frost ~Nov 4
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 30 years of NOAA records (1991–2020 normals)
ChanceLast frost in spring afterFirst frost in fall before
10% (unlikely)April 23October 24
50% (typical)April 7November 4
90% (likely)March 26November 16
Frost-free season (32°F, 50% chance)
209 days
Hard frost (28°F), last in spring, 50% chance after
March 27
Hard frost (28°F), first in fall, 50% chance before
November 14

The last 15 years (2006–2020 normals)

Typical last frost April 7 (same as the 30-year normal), typical first fall frost November 5 (1 day later). Frost-free season 212 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 London Locks: chance of a frost after this dateSpring, chance of a frost after the date: 10% April 23, 20% April 18, 30% April 15, 40% April 10, 50% April 7, 60% April 5, 70% April 2, 80% March 31, 90% March 26. Observed last spring frost in recent years: 2021 April 24, 2022 April 21, 2023 April 10, 2024 March 25, 2025 April 13.Spring: last frostChance of a frost after this date10%50%90%Apr 1May 1Apr 23Apr 7Mar 262021: April 242022: April 212023: April 102024: March 252025: April 13Fall at London Locks: chance of a frost before this dateFall, chance of a frost before the date: 10% October 24, 20% October 28, 30% October 31, 40% November 1, 50% November 4, 60% November 6, 70% November 9, 80% November 11, 90% November 16. Observed first fall frost in recent years: 2021 November 4, 2022 November 15, 2023 November 2, 2024 November 22, 2025 November 11.Fall: first frostChance of a frost before this date10%50%90%Nov 1Oct 24Nov 4Nov 162021: November 42022: November 152023: November 22024: November 222025: November 11
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 24November 4
2022April 21November 15
2023April 10November 2
2024March 25November 22
2025April 13November 11
2026incomplete recordseason not over yet

What these dates mean

April 23 is the cautious spring date for London Locks, with a 10% chance that a light frost will occur later; this lets the gardener plan setting out tender crops with low risk. March 26 carries a 90% chance and would be a gamble for early planting.

The 50% dates mark the point where a light frost is equally likely to have happened or not. At London Locks the spring median is April 7 and the fall median is November 4; they are not frost dates but give the gardener a reference when odds are even. The hard-frost median dates are March 27 in spring and November 14 in fall, and a hard frost can damage plants more severely than a light frost.

October 24 is the cautious fall date, with only a 10% chance that a light frost has arrived earlier, guiding the gardener to finish harvesting tender crops before risk rises. A hard frost matters more than a light frost because the lower 28°F temperature can cause greater injury to plant tissue.

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 24" 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 London Locks, WVNumbered nearest stations: 1 — near Charleston, WV — 18 mi; 2 — Beckley Va Hospital, WV — 31 mi; 3 — Beckley, WV — 31 mi; 4 — near Winfield, WV — 38 mi; 5 — Logan, WV — 40 mi.KYOHVA25 mi · 40 km1. near Charleston, WV — 18 mi12. Beckley Va Hospital, WV — 31 mi23. Beckley, WV — 31 mi34. near Winfield, WV — 38 mi45. Logan, WV — 40 mi5
  1. near Charleston, WV 18 mi (28 km)
  2. Beckley Va Hospital, WV 31 mi (50 km)
  3. Beckley, WV 31 mi (50 km)
  4. near Winfield, WV 38 mi (60 km)
  5. Logan, WV 40 mi (65 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: 38.1933, -81.37.