U.S. Frost Dates by Weather Station

NOAA station USC00336781 · Ohio

Frost Dates near Sciotodale, OH

NOAA weather station Portsmouth-Sciotoville (USC00336781), Ohio · elevation 540 ft (165 m) · hardiness zone 7a*

Sciotodale is the nearest town to the station (1.0 mi away) in GeoNames (CC BY 4.0). The dates below are measured at the station, not in the town itself.

  • Lower-risk planting dateafter May 5only 1 spring in 10 still has a frost later
  • Typical last frostApril 1750% chance of a frost after it
  • Typical first fall frostOctober 2550% chance of a frost before it
  • Frost-free season191 daystypical year, 32°F
  • Hardiness zone7acalculated*

The year at a glance

Frost season near Sciotodale, OHSpring: a frost after April 3 in 9 years out of 10, after April 17 in half of the years, after May 5 in 1 year out of 10. Fall: the first frost comes before October 11 in 1 year out of 10, before October 25 in half of the years, before November 6 in 9 years out of 10. Typical frost-free season: 191 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Apr 17First frost ~Oct 25Frost season near Sciotodale, OHSpring: a frost after April 3 in 9 years out of 10, after April 17 in half of the years, after May 5 in 1 year out of 10. Fall: the first frost comes before October 11 in 1 year out of 10, before October 25 in half of the years, before November 6 in 9 years out of 10. Typical frost-free season: 191 days.JFMAMJJASONDLast frost ~Apr 17First frost ~Oct 25
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)May 5October 11
50% (typical)April 17October 25
90% (likely)April 3November 6
Frost-free season (32°F, 50% chance)
191 days
Hard frost (28°F), last in spring, 50% chance after
April 4
Hard frost (28°F), first in fall, 50% chance before
November 4

The last 15 years (2006–2020 normals)

Typical last frost April 16 (1 day earlier than the 30-year normal), typical first fall frost October 28 (3 days later). Frost-free season 194 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 near Sciotodale: chance of a frost after this dateSpring, chance of a frost after the date: 10% May 5, 20% April 28, 30% April 24, 40% April 20, 50% April 17, 60% April 14, 70% April 10, 80% April 7, 90% April 3. Observed last spring frost in recent years: 2021 April 24, 2022 April 21, 2023 April 26, 2024 April 23, 2025 April 14, 2026 May 3.Spring: last frostChance of a frost after this date10%50%90%Apr 1May 1May 5Apr 17Apr 32021: April 242022: April 212023: April 262024: April 232025: April 142026: May 3Fall near Sciotodale: chance of a frost before this dateFall, chance of a frost before the date: 10% October 11, 20% October 16, 30% October 19, 40% October 22, 50% October 25, 60% October 28, 70% October 31, 80% November 2, 90% November 6. Observed first fall frost in recent years: 2021 November 3, 2022 October 20, 2023 November 1, 2024 October 28, 2025 October 24.Fall: first frostChance of a frost before this date10%50%90%Oct 1Nov 1Oct 11Oct 25Nov 62021: November 32022: October 202023: November 12024: October 282025: 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 3
2022April 21October 20
2023April 26November 1
2024April 23October 28
2025April 14October 24
2026May 3season not over yet

What these dates mean

The cautious fall date for finishing the harvest in the Sciotodale area is October 11, when there is only a 10 % chance that a light frost has arrived. The 50% date is October 25, marking an even-odds point, while November 6 carries a 90 % chance that a light frost will already be present, making a later harvest a gamble.

Spring planting follows the same pattern: the cautious date for setting out tender crops is May 5, which has a 10 % chance of a light frost later; the 50% date is April 17, and April 3 involves a 90 % chance of frost, a risky choice. The 50% hard-frost dates are April 4 in spring and November 4 in fall; a hard frost at 28 °F can damage plant tissue that survives 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 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 11" 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 Sciotodale, OHNumbered nearest stations: 1 — Waverly, OH — 25 mi; 2 — South Point, OH — 28 mi; 3 — near Huntington, WV — 32 mi; 4 — Hogsett RC Byrd Dam, WV — 38 mi; 5 — Gallipolis, OH — 38 mi.WVKY25 mi · 40 km1. Waverly, OH — 25 mi12. South Point, OH — 28 mi23. near Huntington, WV — 32 mi34. Hogsett RC Byrd Dam, WV — 38 mi45. Gallipolis, OH — 38 mi5
  1. Waverly, OH 25 mi (40 km)
  2. South Point, OH 28 mi (45 km)
  3. near Huntington, WV 32 mi (52 km)
  4. Hogsett RC Byrd Dam, WV 38 mi (62 km)
  5. Gallipolis, OH 38 mi (62 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: 38.7569, -82.8872.