Frost dates 2026–2027

Frost dates for Oxford, Pennsylvania

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Octoraro Lake, 3.5 mi away (close match).

Last spring frostApr 26
First fall frostOct 22
179 frost-free days
Last spring frostApr 261 year in 10 after May 10
First fall frostOct 221 year in 10 by Oct 9
Growing season179 daysbetween median 32°F dates
Hardiness zoneZone 7a0 to 5°F average extreme low

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Will it freeze in Oxford in the next 7 nights?

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

Tonight: forecast low 59°F. Above 36°F.

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

1 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 Oxford

The median first fall hard-freeze date (28°F) is October 31, from NOAA’s 1991–2020 Climate Normals at Octoraro Lake. 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 19 Oct 1 · Oct 13 · Oct 25 159 days
32°F freeze Apr 9 · Apr 26 · May 10 Oct 9 · Oct 22 · Nov 3 179 days
28°F hard freeze Mar 26 · Apr 11 · Apr 30 Oct 17 · Oct 31 · Nov 13 202 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00366508. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Octoraro Lake

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 Oxford, PA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Octoraro Lake (station USC00366508, elevation 260 ft), 3.5 mi from Oxford. 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 Oxford

CityDistanceLast spring frostFirst fall frost
Newark, DE 14 mi Apr 7 Nov 2
Kennett Square, PA 15 mi Apr 19 Oct 26
Elkton, MD 15 mi Apr 7 Nov 2
Coatesville, PA 16 mi Apr 19 Oct 25
Havre de Grace, MD 18 mi Apr 10 Oct 30
Elsmere, DE 21 mi Apr 7 Nov 4
Downingtown, PA 21 mi Apr 26 Oct 18
Aberdeen, MD 21 mi Apr 10 Oct 30
New Holland, PA 22 mi Apr 14 Nov 1
West Chester, PA 23 mi Apr 26 Oct 18

Frequently asked questions

When is the last frost in Oxford?

On average, the last spring frost (32°F) in Oxford is around April 26. 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 Oxford?

The first fall frost (32°F) usually arrives around October 22. There’s a 10% chance of a freeze by October 9 and a 90% chance by November 3.

Can it frost in Oxford 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 Oxford?

Oxford 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 19363. See growing zones in Pennsylvania.

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