Frost dates 2026–2027

Frost dates for Franklin, Pennsylvania

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Franklin, 1.2 mi away (close match).

Last spring frostMay 2
First fall frostOct 23
171 frost-free days
Last spring frostMay 21 year in 10 after May 20
First fall frostOct 231 year in 10 by Oct 8
Growing season171 daysbetween median 32°F dates
Hardiness zoneZone 6a−10 to −5°F average extreme low

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Will it freeze in Franklin in the next 7 nights?

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

Tonight: forecast low 45°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 Franklin

The median first fall hard-freeze date (28°F) is November 3, from NOAA’s 1991–2020 Climate Normals at Franklin. 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 29 · May 13 · May 28 Sep 29 · Oct 9 · Oct 23 149 days
32°F freeze Apr 20 · May 2 · May 20 Oct 8 · Oct 23 · Nov 4 171 days
28°F hard freeze Apr 7 · Apr 21 · May 8 Oct 22 · Nov 3 · Nov 15 195 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00363028. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Franklin

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 Franklin, PA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Franklin (station USC00363028, elevation 1,015 ft), 1.2 mi from Franklin. 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 Franklin

CityDistanceLast spring frostFirst fall frost
Oil City, PA 7.5 mi May 2 Oct 23
Titusville, PA 19 mi May 12 Oct 10
Grove City, PA 21 mi May 7 Oct 14
Meadville, PA 24 mi Apr 30 Oct 23
Greenville, PA 29 mi May 4 Oct 14
Hermitage, PA 34 mi May 15 Oct 3
Sharon, PA 36 mi May 1 Oct 17
Butler, PA 36 mi May 7 Oct 14
Edinboro, PA 37 mi May 7 Oct 10
New Castle, PA 38 mi Apr 30 Oct 23

Frequently asked questions

When is the last frost in Franklin?

On average, the last spring frost (32°F) in Franklin is around May 2. In about 1 year in 10 it comes after May 20, and in 9 years in 10 it comes after April 20.

When is the first frost in Franklin?

The first fall frost (32°F) usually arrives around October 23. There’s a 10% chance of a freeze by October 8 and a 90% chance by November 4.

Can it frost in Franklin 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 13.

What growing zone is Franklin?

Franklin 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 16323. See growing zones in Pennsylvania.

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