U.S. Frost Dates by Weather Station

NOAA station USW00013735 · New Jersey

Frost Dates for Millville, NJ

NOAA weather station Millville Municipal Airport (USW00013735), New Jersey · elevation 70 ft (21 m) · hardiness zone 7a*

  • Lower-risk planting dateafter May 10only 1 spring in 10 still has a frost later
  • Typical last frostApril 2450% chance of a frost after it
  • Typical first fall frostOctober 2350% chance of a frost before it
  • Frost-free season181 daystypical year, 32°F
  • Hardiness zone7acalculated*

The year at a glance

Frost season at Millville, NJSpring: a frost after April 8 in 9 years out of 10, after April 24 in half of the years, after May 10 in 1 year out of 10. Fall: the first frost comes before October 10 in 1 year out of 10, before October 23 in half of the years, before November 5 in 9 years out of 10. Typical frost-free season: 181 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Apr 24First frost ~Oct 23Frost season at Millville, NJSpring: a frost after April 8 in 9 years out of 10, after April 24 in half of the years, after May 10 in 1 year out of 10. Fall: the first frost comes before October 10 in 1 year out of 10, before October 23 in half of the years, before November 5 in 9 years out of 10. Typical frost-free season: 181 days.JFMAMJJASONDLast frost ~Apr 24First frost ~Oct 23
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 10October 10
50% (typical)April 24October 23
90% (likely)April 8November 5
Frost-free season (32°F, 50% chance)
181 days
Hard frost (28°F), last in spring, 50% chance after
April 10
Hard frost (28°F), first in fall, 50% chance before
November 2

The last 15 years (2006–2020 normals)

Typical last frost April 21 (3 days earlier than the 30-year normal), typical first fall frost October 25 (2 days later). Frost-free season 187 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 Millville: chance of a frost after this dateSpring, chance of a frost after the date: 10% May 10, 20% May 5, 30% May 1, 40% April 27, 50% April 24, 60% April 21, 70% April 19, 80% April 15, 90% April 8. Observed last spring frost in recent years: 2021 April 23, 2022 May 1, 2023 April 19, 2024 April 26, 2025 April 18, 2026 April 28.Spring: last frostChance of a frost after this date10%50%90%Apr 1May 1May 10Apr 24Apr 82021: April 232022: May 12023: April 192024: April 262025: April 182026: April 28Fall at Millville: chance of a frost before this dateFall, chance of a frost before the date: 10% October 10, 20% October 13, 30% October 17, 40% October 20, 50% October 23, 60% October 25, 70% October 29, 80% November 1, 90% November 5. Observed first fall frost in recent years: 2021 November 3, 2022 October 19, 2023 October 24, 2024 October 16.Fall: first frostChance of a frost before this date10%50%90%Oct 1Nov 1Oct 10Oct 23Nov 52021: November 32022: October 192023: October 242024: October 16
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 23November 3
2022May 1October 19
2023April 19October 24
2024April 26October 16
2025April 18incomplete record
2026April 28season not over yet

What these dates mean

May 10 is the cautious spring date in Millville, and it lets a gardener plan to set out tender crops with only a 10 % chance of a light frost later. The equally cautious fall date is October 10, the day when a tender crop can be finished with only a 10 % chance that a light frost has already arrived.

April 24 marks the 50 % point for light frost in spring, meaning the odds of a frost are equal on either side of that day, and October 23 serves the same function for fall. The median hard-frost dates, April 10 in spring and November 2 in fall, are noted because a hard frost at 28 °F can cause more severe damage 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 10" 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 Millville, NJNumbered nearest stations: 1 — Seabrook Farms, NJ — 12 mi; 2 — Estell Manor, NJ — 13 mi; 3 — Atlantic City (Airport), NJ — 27 mi; 4 — Dover, DE — 28 mi; 5 — Cape May, NJ — 29 mi.NJMDPA25 mi · 40 km1. Seabrook Farms, NJ — 12 mi12. Estell Manor, NJ — 13 mi23. Atlantic City (Airport), NJ — 27 mi34. Dover, DE — 28 mi45. Cape May, NJ — 29 mi5
  1. Seabrook Farms, NJ 12 mi (19 km)
  2. Estell Manor, NJ 13 mi (20 km)
  3. Atlantic City (Airport), NJ 27 mi (44 km)
  4. Dover, DE 28 mi (45 km)
  5. Cape May, NJ 29 mi (47 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: 39.3667, -75.0667.