Frost dates 2026–2027

Frost dates for Corry, Pennsylvania

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Union City Filtration Plant, 12 mi away (close match).

Last spring frostMay 7
First fall frostOct 10
155 frost-free days
Last spring frostMay 71 year in 10 after May 24
First fall frostOct 101 year in 10 by Sep 29
Growing season155 daysbetween median 32°F dates
Hardiness zoneZone 6a−10 to −5°F average extreme low

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Will it freeze in Corry in the next 7 nights?

The earliest overnight low at or below 32°F in the available NWS frost forecast is Sat, Nov 7: 32°F (Sat, Nov 7, 6:00 PM EST to Sun, Nov 8, 6:00 AM EST).

Tonight: forecast low 43°F. Above 36°F.

NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.

6 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.

Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.

Frost and freeze probabilities

Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.

These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.

Average first hard freeze in Corry

The median first fall hard-freeze date (28°F) is October 23, from NOAA’s 1991–2020 Climate Normals at Union City Filtration Plant. This is the 50% probability date, not a forecast for this year.

TemperatureLast spring date
90% · 50% · 10% chance of a later freeze
First fall date
10% · 50% · 90% chance of an earlier freeze
Season
36°F frost possible May 5 · May 20 · Jun 1 Sep 17 · Sep 30 · Oct 11 132 days
32°F freeze Apr 23 · May 7 · May 24 Sep 29 · Oct 10 · Oct 24 155 days
28°F hard freeze Apr 9 · Apr 24 · May 12 Oct 6 · Oct 23 · Nov 10 181 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00369042. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Union City Filtration Plant

Average low temperature by month

Months with lows near or below freezing carry frost risk

Where these frost dates come from

The frost dates for Corry, PA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Union City Filtration Plant (station USC00369042, elevation 1,400 ft), 12 mi from Corry. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.

Frost dates near Corry

CityDistanceLast spring frostFirst fall frost
Titusville, PA 21 mi May 12 Oct 10
Jamestown, NY 24 mi May 8 Oct 13
Edinboro, PA 25 mi May 7 Oct 10
Warren, PA 26 mi May 4 Oct 21
Erie, PA 26 mi Apr 26 Nov 4
Meadville, PA 33 mi Apr 30 Oct 23
Oil City, PA 35 mi May 2 Oct 23
Fredonia, NY 39 mi Apr 25 Nov 1
Franklin, PA 39 mi May 2 Oct 23
Dunkirk, NY 41 mi Apr 30 Oct 23

Frequently asked questions

When is the last frost in Corry?

On average, the last spring frost (32°F) in Corry is around May 7. In about 1 year in 10 it comes after May 24, and in 9 years in 10 it comes after April 23.

When is the first frost in Corry?

The first fall frost (32°F) usually arrives around October 10. There’s a 10% chance of a freeze by September 29 and a 90% chance by October 24.

Can it frost in Corry after the last frost date?

Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after May 20.

What growing zone is Corry?

Corry is in USDA Plant Hardiness Zone 6a (average annual extreme minimum temperature −10 to −5°F), based on the 2023 USDA map for ZIP code 16407. See growing zones in Pennsylvania.

More: all Pennsylvania frost dates · Pennsylvania growing zones · frost vs. freeze