Frost dates 2026–2027

Frost dates for Leonardtown, Maryland

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Solomons, 10 mi away (close match).

Last spring frostMar 22
First fall frostNov 26
248 frost-free days
Last spring frostMar 221 year in 10 after Apr 5
First fall frostNov 261 year in 10 by Nov 10
Growing season248 daysbetween median 32°F dates
Hardiness zoneZone 7b5 to 10°F average extreme low

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Will it freeze in Leonardtown in the next 7 nights?

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

Tonight: forecast low 62°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 Leonardtown

The median first fall hard-freeze date (28°F) is December 9, from NOAA’s 1991–2020 Climate Normals at Solomons. 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 Mar 20 · Apr 3 · Apr 18 Oct 31 · Nov 13 · Dec 1 223 days
32°F freeze Mar 6 · Mar 22 · Apr 5 Nov 10 · Nov 26 · Dec 12 248 days
28°F hard freeze Feb 21 · Mar 10 · Mar 25 Nov 24 · Dec 9 · Dec 29 276 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00188405. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Solomons

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 Leonardtown, MD come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Solomons (station USC00188405, elevation 12 ft), 10 mi from Leonardtown. 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 Leonardtown

CityDistanceLast spring frostFirst fall frost
La Plata, MD 24 mi Apr 17 Oct 27
Chesapeake Beach, MD 27 mi Apr 9 Oct 29
Cambridge, MD 35 mi Apr 1 Nov 7
District Heights, MD 40 mi Mar 29 Nov 8
Dumfries, VA 41 mi Mar 28 Nov 8
Alexandria, VA 43 mi Mar 24 Nov 18
Glenarden, MD 45 mi Apr 22 Oct 22
Easton, MD 45 mi Apr 1 Nov 7
Bowie, MD 45 mi Apr 22 Oct 22
Cheverly, MD 45 mi Mar 29 Nov 8

Frequently asked questions

When is the last frost in Leonardtown?

On average, the last spring frost (32°F) in Leonardtown is around March 22. In about 1 year in 10 it comes after April 5, and in 9 years in 10 it comes after March 6.

When is the first frost in Leonardtown?

The first fall frost (32°F) usually arrives around November 26. There’s a 10% chance of a freeze by November 10 and a 90% chance by December 12.

Can it frost in Leonardtown 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 3.

What growing zone is Leonardtown?

Leonardtown 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 20650. See growing zones in Maryland.

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