U.S. Frost Dates by Weather Station

NOAA station USC00331390 · Ohio

Frost Dates for Celina, OH

NOAA weather station Celina 3 NE (USC00331390), Ohio · elevation 866 ft (264 m) · hardiness zone 6a*

  • Lower-risk planting dateafter May 10only 1 spring in 10 still has a frost later
  • Typical last frostApril 2750% chance of a frost after it
  • Typical first fall frostOctober 1950% chance of a frost before it
  • Frost-free season175 daystypical year, 32°F
  • Hardiness zone6acalculated*

The year at a glance

Frost season at Celina, OHSpring: a frost after April 12 in 9 years out of 10, after April 27 in half of the years, after May 10 in 1 year out of 10. Fall: the first frost comes before October 3 in 1 year out of 10, before October 19 in half of the years, before November 1 in 9 years out of 10. Typical frost-free season: 175 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Apr 27First frost ~Oct 19Frost season at Celina, OHSpring: a frost after April 12 in 9 years out of 10, after April 27 in half of the years, after May 10 in 1 year out of 10. Fall: the first frost comes before October 3 in 1 year out of 10, before October 19 in half of the years, before November 1 in 9 years out of 10. Typical frost-free season: 175 days.JFMAMJJASONDLast frost ~Apr 27First frost ~Oct 19
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 30 years of NOAA records (1991–2020 normals)
ChanceLast frost in spring afterFirst frost in fall before
10% (unlikely)May 10October 3
50% (typical)April 27October 19
90% (likely)April 12November 1
Frost-free season (32°F, 50% chance)
175 days
Hard frost (28°F), last in spring, 50% chance after
April 15
Hard frost (28°F), first in fall, 50% chance before
October 31

The last 15 years (2006–2020 normals)

Typical last frost April 26 (1 day earlier than the 30-year normal), typical first fall frost October 22 (3 days later). Frost-free season 178 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 Celina: chance of a frost after this dateSpring, chance of a frost after the date: 10% May 10, 20% May 6, 30% May 2, 40% April 29, 50% April 27, 60% April 23, 70% April 20, 80% April 17, 90% April 12. Observed last spring frost in recent years: 2021 May 12, 2022 April 27, 2023 May 2, 2024 April 25, 2025 April 17, 2026 May 3.Spring: last frostChance of a frost after this date10%50%90%Apr 1May 1May 10Apr 27Apr 122021: May 122022: April 272023: May 22024: April 252025: April 172026: May 3Fall at Celina: chance of a frost before this dateFall, chance of a frost before the date: 10% October 3, 20% October 9, 30% October 13, 40% October 16, 50% October 19, 60% October 21, 70% October 24, 80% October 27, 90% November 1. Observed first fall frost in recent years: 2021 October 27, 2022 October 4, 2023 October 22, 2024 October 16, 2025 October 25.Fall: first frostChance of a frost before this date10%50%90%Oct 1Nov 1Oct 3Oct 19Nov 12021: October 272022: October 42023: October 222024: October 162025: October 25
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
2021May 12October 27
2022April 27October 4
2023May 2October 22
2024April 25October 16
2025April 17October 25
2026May 3season not over yet

What these dates mean

The 175 days between the 32°F 50% dates in Celina, April 27 and October 19, contain the span when light frosts are less likely and when most garden work can proceed.

For a cautious plan, gardeners should aim to set out tender crops after the spring light-frost cautious date of May 10, which carries only a 10 % chance of a frost later. In the fall, the cautious date to finish harvesting tender crops is October 3, when there is only a 10 % chance a frost has arrived earlier. The 50% dates—April 27 in spring and October 19 in fall—mark the point of even odds for a light frost, but they are not frost dates themselves.

A hard frost at 28 °F, such as the median dates of April 15 and October 31, can damage plants more severely 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 May 10" 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 3" 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 Celina, OHNumbered nearest stations: 1 — Berne, IN — 22 mi; 2 — Lima, OH — 24 mi; 3 — Sidney, OH — 29 mi; 4 — Greenville, OH — 33 mi; 5 — Bluffton, IN — 37 mi.OHIN25 mi · 40 km1. Berne, IN — 22 mi12. Lima, OH — 24 mi23. Sidney, OH — 29 mi34. Greenville, OH — 33 mi45. Bluffton, IN — 37 mi5
  1. Berne, IN 22 mi (35 km)
  2. Lima, OH 24 mi (38 km)
  3. Sidney, OH 29 mi (47 km)
  4. Greenville, OH 33 mi (53 km)
  5. Bluffton, IN 37 mi (59 km)

Sources

* Hardiness zone 6a: zone derived from PRISM 2023 grid at the station location (not the official USDA map). Source data: PRISM Group, Oregon State University.

Station coordinates: 40.5689, -84.5369.