U.S. Frost Dates by Weather Station

NOAA station USC00464200 · West Virginia

Frost Dates for Hogsett RC Byrd Dam, WV

NOAA weather station Hogsett RC Byrd Dam (USC00464200), West Virginia · elevation 570 ft (174 m) · hardiness zone 7a*

  • Lower-risk planting dateafter May 5only 1 spring in 10 still has a frost later
  • Typical last frostApril 1850% chance of a frost after it
  • Typical first fall frostOctober 2950% chance of a frost before it
  • Frost-free season192 daystypical year, 32°F
  • Hardiness zone7acalculated*

The year at a glance

Frost season at Hogsett RC Byrd Dam, WVSpring: a frost after April 3 in 9 years out of 10, after April 18 in half of the years, after May 5 in 1 year out of 10. Fall: the first frost comes before October 16 in 1 year out of 10, before October 29 in half of the years, before November 9 in 9 years out of 10. Typical frost-free season: 192 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Apr 18First frost ~Oct 29Frost season at Hogsett RC Byrd Dam, WVSpring: a frost after April 3 in 9 years out of 10, after April 18 in half of the years, after May 5 in 1 year out of 10. Fall: the first frost comes before October 16 in 1 year out of 10, before October 29 in half of the years, before November 9 in 9 years out of 10. Typical frost-free season: 192 days.JFMAMJJASONDLast frost ~Apr 18First frost ~Oct 29
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)May 5October 16
50% (typical)April 18October 29
90% (likely)April 3November 9
Frost-free season (32°F, 50% chance)
192 days
Hard frost (28°F), last in spring, 50% chance after
April 4
Hard frost (28°F), first in fall, 50% chance before
November 7

The last 15 years (2006–2020 normals)

Typical last frost April 16 (2 days earlier than the 30-year normal), typical first fall frost October 30 (1 day later). Frost-free season 195 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 Hogsett RC Byrd Dam: chance of a frost after this dateSpring, chance of a frost after the date: 10% May 5, 20% April 30, 30% April 24, 40% April 21, 50% April 18, 60% April 14, 70% April 10, 80% April 7, 90% April 3. Observed last spring frost in recent years: 2021 April 24, 2022 April 20, 2023 April 26.Spring: last frostChance of a frost after this date10%50%90%Apr 1May 1May 5Apr 18Apr 32021: April 242022: April 202023: April 26Fall at Hogsett RC Byrd Dam: chance of a frost before this dateFall, chance of a frost before the date: 10% October 16, 20% October 20, 30% October 23, 40% October 26, 50% October 29, 60% October 31, 70% November 2, 80% November 5, 90% November 9. Observed first fall frost in recent years: 2021 November 4, 2022 October 21, 2023 October 24.Fall: first frostChance of a frost before this date10%50%90%Nov 1Oct 16Oct 29Nov 92021: November 42022: October 212023: October 24
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 20October 21
2023April 26October 24
2024incomplete recordincomplete record
2025no dataincomplete record
2026incomplete recordseason not over yet

What these dates mean

May 5 is the cautious spring date at Hogsett RC Byrd Dam, giving a gardener a plan to set out tender crops when only a 10% chance of a later light frost remains. The 50% light-frost date of April 18 marks the point where odds of frost are even, and the hard-frost median of April 4 indicates when a 28°F freeze becomes a 50-50 possibility.

October 16 is the cautious fall date, allowing a gardener to finish harvesting tender crops while only a 10% chance exists that a light frost has already arrived. The median light-frost date of October 29 shows even odds of frost, and the hard-frost median of November 7 signals the 50% chance of a 28°F freeze. Hard frost at 28°F can harm or kill plants that would otherwise survive a 32°F light frost.

How to read the probabilities

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

  • Spring: "10% after May 5" 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 16" 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 Hogsett RC Byrd Dam, WVNumbered nearest stations: 1 — Gallipolis, OH — 9 mi; 2 — near Winfield, WV — 18 mi; 3 — Ripley, WV — 27 mi; 4 — South Point, OH — 29 mi; 5 — near Huntington, WV — 30 mi.WVOHKY25 mi · 40 km1. Gallipolis, OH — 9 mi12. near Winfield, WV — 18 mi23. Ripley, WV — 27 mi34. South Point, OH — 29 mi45. near Huntington, WV — 30 mi5
  1. Gallipolis, OH 9 mi (15 km)
  2. near Winfield, WV 18 mi (29 km)
  3. Ripley, WV 27 mi (44 km)
  4. South Point, OH 29 mi (46 km)
  5. near Huntington, WV 30 mi (48 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: 38.6842, -82.1839.