U.S. Frost Dates by Weather Station

NOAA station USC00303955 · New York

Frost Dates for Honeoye, NY

NOAA weather station Honeoye (USC00303955), New York · elevation 800 ft (244 m) · hardiness zone 6a*

  • Lower-risk planting dateafter May 27only 1 spring in 10 still has a frost later
  • Typical last frostMay 1050% chance of a frost after it
  • Typical first fall frostOctober 450% chance of a frost before it
  • Frost-free season147 daystypical year, 32°F
  • Hardiness zone6acalculated*

The year at a glance

Frost season at Honeoye, NYSpring: a frost after April 25 in 9 years out of 10, after May 10 in half of the years, after May 27 in 1 year out of 10. Fall: the first frost comes before September 22 in 1 year out of 10, before October 4 in half of the years, before October 20 in 9 years out of 10. Typical frost-free season: 147 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~May 10First frost ~Oct 4Frost season at Honeoye, NYSpring: a frost after April 25 in 9 years out of 10, after May 10 in half of the years, after May 27 in 1 year out of 10. Fall: the first frost comes before September 22 in 1 year out of 10, before October 4 in half of the years, before October 20 in 9 years out of 10. Typical frost-free season: 147 days.JFMAMJJASONDLast frost ~May 10First frost ~Oct 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 28 years of NOAA records (1991–2020 normals)
ChanceLast frost in spring afterFirst frost in fall before
10% (unlikely)May 27September 22
50% (typical)May 10October 4
90% (likely)April 25October 20
Frost-free season (32°F, 50% chance)
147 days
Hard frost (28°F), last in spring, 50% chance after
April 29
Hard frost (28°F), first in fall, 50% chance before
October 20

The last 15 years (2006–2020 normals)

Typical last frost May 7 (3 days earlier than the 30-year normal), typical first fall frost October 10 (6 days later). Frost-free season 152 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 Honeoye: chance of a frost after this dateSpring, chance of a frost after the date: 10% May 27, 20% May 21, 30% May 16, 40% May 13, 50% May 10, 60% May 6, 70% May 2, 80% April 29, 90% April 25. Observed last spring frost in recent years: 2021 May 11, 2022 May 9, 2023 May 25, 2024 April 26, 2025 April 28, 2026 May 12.Spring: last frostChance of a frost after this date10%50%90%May 1Jun 1May 27May 10Apr 252021: May 112022: May 92023: May 252024: April 262025: April 282026: May 12Fall at Honeoye: chance of a frost before this dateFall, chance of a frost before the date: 10% September 22, 20% September 26, 30% September 30, 40% October 2, 50% October 4, 60% October 7, 70% October 11, 80% October 15, 90% October 20. Observed first fall frost in recent years: 2021 November 4, 2022 October 3, 2023 October 12, 2024 October 18, 2025 October 1.Fall: first frostChance of a frost before this date10%50%90%Oct 1Nov 1Sep 22Oct 4Oct 202021: November 42022: October 32023: October 122024: October 182025: October 1
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 11November 4
2022May 9October 3
2023May 25October 12
2024April 26October 18
2025April 28October 1
2026May 12season not over yet

What these dates mean

The 147 days between the 50% dates in Honeoye define the period when a light frost is less likely than not, offering a window for tender crops. The 50% date for spring light frost is May 10, and for fall it is October 4; during this span the chance of a light frost is under 50 %.

For a cautious plan, gardeners would wait until the May 27 date, which carries only a 10 % chance of a light frost later, before setting out tender crops, and aim to finish tender harvest by the September 22 date, which has only a 10 % chance of a light frost earlier. Planting on April 25 or counting on crops through October 20 raises the risk, as each holds a 90 % chance of a light frost. The hard-frost 50% dates are April 29 in spring and October 20 in fall, and a hard frost at 28 °F can damage plants that 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 27" 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 September 22" 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 Honeoye, NYNumbered nearest stations: 1 — Hemlock, NY — 5 mi; 2 — Canandaigua, NY — 12 mi; 3 — Avon, NY — 15 mi; 4 — Dansville, NY — 19 mi; 5 — Rochester, NY — 24 mi.25 mi · 40 km1. Hemlock, NY — 5 mi12. Canandaigua, NY — 12 mi23. Avon, NY — 15 mi34. Dansville, NY — 19 mi45. Rochester, NY — 24 mi5
  1. Hemlock, NY 5 mi (8 km)
  2. Canandaigua, NY 12 mi (20 km)
  3. Avon, NY 15 mi (24 km)
  4. Dansville, NY 19 mi (30 km)
  5. Rochester, NY 24 mi (39 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: 42.7914, -77.5133.