Frost dates 2026–2027

Frost dates for Franklin Park, Pennsylvania

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Emsworth L/d Ohio Rvr, 6.1 mi away (close match).

Last spring frostApr 24
First fall frostOct 27
186 frost-free days
Last spring frostApr 241 year in 10 after May 11
First fall frostOct 271 year in 10 by Oct 13
Growing season186 daysbetween median 32°F dates
Hardiness zoneZone 6b−5 to 0°F average extreme low

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Will it freeze in Franklin Park in the next 7 nights?

No overnight lows at or below 32°F are forecast in Franklin Park during the next 7 nights in the available NWS frost forecast.

Tonight: forecast low 48°F. Above 36°F.

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

3 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 Park

The median first fall hard-freeze date (28°F) is November 5, from NOAA’s 1991–2020 Climate Normals at Emsworth L/d Ohio Rvr. 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 20 · May 5 · May 21 Oct 2 · Oct 16 · Oct 28 163 days
32°F freeze Apr 9 · Apr 24 · May 11 Oct 13 · Oct 27 · Nov 7 186 days
28°F hard freeze Mar 28 · Apr 12 · Apr 26 Oct 24 · Nov 5 · Nov 20 209 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00362574. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Emsworth L/d Ohio Rvr

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 Park, PA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Emsworth L/d Ohio Rvr (station USC00362574, elevation 717 ft), 6.1 mi from Franklin Park. 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 Park

CityDistanceLast spring frostFirst fall frost
Economy, PA 5.6 mi Apr 8 Nov 8
West View, PA 6.2 mi Apr 24 Oct 27
Coraopolis, PA 6.2 mi Apr 28 Oct 18
Ambridge, PA 6.8 mi Apr 8 Nov 8
Bellevue, PA 7.5 mi Apr 24 Oct 27
Aliquippa, PA 8.1 mi Apr 8 Nov 8
McKees Rocks, PA 8.7 mi Apr 24 Oct 27
Crafton, PA 11 mi Apr 24 Oct 27
Monaca, PA 11 mi Apr 27 Oct 25
Fox Chapel, PA 12 mi Apr 16 Nov 1

Frequently asked questions

When is the last frost in Franklin Park?

On average, the last spring frost (32°F) in Franklin Park is around April 24. In about 1 year in 10 it comes after May 11, and in 9 years in 10 it comes after April 9.

When is the first frost in Franklin Park?

The first fall frost (32°F) usually arrives around October 27. There’s a 10% chance of a freeze by October 13 and a 90% chance by November 7.

Can it frost in Franklin Park 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 5.

What growing zone is Franklin Park?

Franklin Park is in USDA Plant Hardiness Zone 6b (average annual extreme minimum temperature −5 to 0°F), based on the 2023 USDA map for ZIP code 15090. See growing zones in Pennsylvania.

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