Frost dates 2026–2027

Frost dates for Aberdeen, Maryland

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Aberdeen Phillips Field, 3.1 mi away (close match).

Last spring frostApr 10
First fall frostOct 30
201 frost-free days
Last spring frostApr 101 year in 10 after Apr 30
First fall frostOct 301 year in 10 by Oct 14
Growing season201 daysbetween median 32°F dates
Hardiness zoneZone 7b5 to 10°F average extreme low

Checking current alerts… View NWS forecast and alerts.

Will it freeze in Aberdeen in the next 7 nights?

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

Tonight: forecast low 60°F. Above 36°F.

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

No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.

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 Aberdeen

The median first fall hard-freeze date (28°F) is November 10, from NOAA’s 1991–2020 Climate Normals at Aberdeen Phillips Field. 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 9 · Apr 27 · May 12 Oct 5 · Oct 19 · Nov 1 175 days
32°F freeze Mar 27 · Apr 10 · Apr 30 Oct 14 · Oct 30 · Nov 12 201 days
28°F hard freeze Mar 13 · Mar 29 · Apr 12 Oct 28 · Nov 10 · Nov 27 226 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USW00013701. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Aberdeen Phillips Field

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 Aberdeen, MD come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Aberdeen Phillips Field (station USW00013701, elevation 57 ft), 3.1 mi from Aberdeen. 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 Aberdeen

CityDistanceLast spring frostFirst fall frost
Havre de Grace, MD 3.7 mi Apr 10 Oct 30
Bel Air, MD 9.3 mi Apr 10 Oct 30
Elkton, MD 20 mi Apr 7 Nov 2
Chestertown, MD 21 mi Apr 3 Nov 5
Oxford, PA 21 mi Apr 26 Oct 22
Newark, DE 25 mi Apr 7 Nov 2
Middletown, DE 25 mi Apr 7 Nov 2
Baltimore, MD 28 mi Mar 24 Nov 21
New Freedom, PA 32 mi Apr 19 Oct 25
Kennett Square, PA 34 mi Apr 19 Oct 26

Frequently asked questions

When is the last frost in Aberdeen?

On average, the last spring frost (32°F) in Aberdeen is around April 10. In about 1 year in 10 it comes after April 30, and in 9 years in 10 it comes after March 27.

When is the first frost in Aberdeen?

The first fall frost (32°F) usually arrives around October 30. There’s a 10% chance of a freeze by October 14 and a 90% chance by November 12.

Can it frost in Aberdeen 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 April 27.

What growing zone is Aberdeen?

Aberdeen is in USDA Plant Hardiness Zone 7b (average annual extreme minimum temperature 5 to 10°F), based on the 2023 USDA map for ZIP code 21001. See growing zones in Maryland.

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