Frost dates 2026–2027

Frost dates for Wilkes-Barre, Pennsylvania

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Wilkes-Barre Intl Airport, 9.8 mi away (close match).

Last spring frostApr 23
First fall frostOct 20
178 frost-free days
Last spring frostApr 231 year in 10 after May 10
First fall frostOct 201 year in 10 by Oct 4
Growing season178 daysbetween median 32°F dates
Hardiness zoneZone 7a0 to 5°F average extreme low

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Will it freeze in Wilkes-Barre in the next 7 nights?

The earliest overnight low at or below 32°F in the available NWS frost forecast is Wed, Nov 11: 30°F (Wed, Nov 11, 6:00 PM EST to Thu, Nov 12, 6:00 AM EST).

Tonight: forecast low 54°F. Above 36°F.

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

4 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 Wilkes-Barre

The median first fall hard-freeze date (28°F) is November 3, from NOAA’s 1991–2020 Climate Normals at Wilkes-Barre Intl Airport. 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 Apr 21 · May 4 · May 22 Sep 25 · Oct 7 · Oct 22 155 days
32°F freeze Apr 9 · Apr 23 · May 10 Oct 4 · Oct 20 · Nov 4 178 days
28°F hard freeze Mar 30 · Apr 10 · Apr 26 Oct 16 · Nov 3 · Nov 19 206 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USW00014777. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Wilkes-Barre Intl Airport

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 Wilkes-Barre, PA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Wilkes-Barre Intl Airport (station USW00014777, elevation 930 ft), 9.8 mi from Wilkes-Barre. 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 Wilkes-Barre

CityDistanceLast spring frostFirst fall frost
Kingston, PA 1.2 mi Apr 23 Oct 20
Swoyersville, PA 3.7 mi Apr 23 Oct 20
Plymouth, PA 3.7 mi Apr 23 Oct 20
Exeter, PA 6.8 mi Apr 23 Oct 20
Nanticoke, PA 7.5 mi May 7 Oct 6
Pittston, PA 7.5 mi Apr 23 Oct 20
Duryea, PA 8.7 mi Apr 23 Oct 20
Old Forge, PA 11 mi Apr 23 Oct 20
Moosic, PA 12 mi Apr 23 Oct 20
Taylor, PA 13 mi Apr 23 Oct 20

Frequently asked questions

When is the last frost in Wilkes-Barre?

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

When is the first frost in Wilkes-Barre?

The first fall frost (32°F) usually arrives around October 20. There’s a 10% chance of a freeze by October 4 and a 90% chance by November 4.

Can it frost in Wilkes-Barre 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 4.

What growing zone is Wilkes-Barre?

Wilkes-Barre is in USDA Plant Hardiness Zone 7a (average annual extreme minimum temperature 0 to 5°F), based on the 2023 USDA map for ZIP code 18701. See growing zones in Pennsylvania.

More: all Pennsylvania frost dates · Pennsylvania growing zones · UV index today in Wilkes-Barre · frost vs. freeze