Frost dates 2026–2027

Frost dates for Tyrone, Pennsylvania

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Philipsburg 2 S, 14 mi away (close match).

Last spring frostMay 13
First fall frostOct 1
142 frost-free days
Last spring frostMay 131 year in 10 after May 29
First fall frostOct 11 year in 10 by Sep 19
Growing season142 daysbetween median 32°F dates
Hardiness zoneZone 6b−5 to 0°F average extreme low

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Will it freeze in Tyrone in the next 7 nights?

The earliest overnight low at or below 32°F in the available NWS frost forecast is Wed, Nov 11: 31°F (Wed, Nov 11, 6:00 PM EST to Thu, Nov 12, 6:00 AM EST).

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.

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 Tyrone

The median first fall hard-freeze date (28°F) is October 16, from NOAA’s 1991–2020 Climate Normals at Philipsburg 2 S. 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 8 · May 27 · Jun 13 Sep 6 · Sep 22 · Oct 5 118 days
32°F freeze Apr 25 · May 13 · May 29 Sep 19 · Oct 1 · Oct 18 142 days
28°F hard freeze Apr 16 · Apr 30 · May 20 Oct 1 · Oct 16 · Nov 3 169 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00366921. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Philipsburg 2 S

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 Tyrone, PA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Philipsburg 2 S (station USC00366921, elevation 1,720 ft), 14 mi from Tyrone. 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 Tyrone

CityDistanceLast spring frostFirst fall frost
Altoona, PA 14 mi Apr 25 Oct 21
Huntingdon, PA 17 mi Apr 19 Oct 28
Hollidaysburg, PA 19 mi Apr 25 Oct 20
State College, PA 22 mi Apr 20 Oct 26
Clearfield, PA 26 mi May 4 Oct 11
Bellefonte, PA 30 mi Apr 20 Oct 26
Lewistown, PA 36 mi Apr 21 Oct 24
DuBois, PA 41 mi May 6 Oct 14
Punxsutawney, PA 42 mi May 10 Oct 12
Johnstown, PA 43 mi Apr 29 Oct 21

Frequently asked questions

When is the last frost in Tyrone?

On average, the last spring frost (32°F) in Tyrone is around May 13. In about 1 year in 10 it comes after May 29, and in 9 years in 10 it comes after April 25.

When is the first frost in Tyrone?

The first fall frost (32°F) usually arrives around October 1. There’s a 10% chance of a freeze by September 19 and a 90% chance by October 18.

Can it frost in Tyrone 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 27.

What growing zone is Tyrone?

Tyrone 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 16686. See growing zones in Pennsylvania.

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