Frost Report

All states Maryland

Frost dates for Assateague, MD

When the last spring frost and first fall frost usually come, and when to plant, from 30 years of NOAA weather records.

Last spring frost

March 31

typical year

Safe to plant

April 13

frost is over in 9 of 10 years

First fall frost

November 15

typical year

Growing season

228 days

frost-free, typical year

When to plant

Counted from this page's frost dates. Warm-season crops wait for the safe-to-plant date.

CropStart indoorsPlant outsideFall planting
Cool-season crops
Peas – Mar 3 – 17 –
Spinach – Feb 17 – Mar 10 Sep 20 – Oct 4
Lettuce – Mar 3 – 24 Sep 20 – Oct 4
Radishes – Mar 3 – Apr 14 Oct 4 – 18
Onions – Mar 3 – 17 –
Potatoes – Mar 10 – 24 –
Carrots – Mar 10 – 31 Aug 23 – Sep 6
Beets – Mar 3 – 17 Sep 6 – 20
Kale Jan 20 – Feb 3 Mar 3 – 17 Sep 6 – 20
Broccoli Jan 20 – Feb 3 Mar 17 – 31 Sep 6 – 20
Cabbage Jan 6 – 20 Mar 3 – 17 Sep 6 – 20
Garlic – – Oct 4 – 25
Warm-season crops
Tomatoes Feb 16 – Mar 2 Apr 13 – 27 –
Peppers Feb 9 – 23 Apr 20 – May 4 –
Cucumbers – Apr 13 – May 4 –
Zucchini – Apr 13 – May 11 –
Pumpkins – Apr 13 – May 4 –
Green beans – Apr 13 – Sep 6 –
Sweet corn – Apr 13 – May 11 –
Basil Mar 9 – 23 Apr 20 – 27 –

Onions: from sets. Green beans: until 10 weeks before the first fall frost. Garlic: harvest next summer.

The year at a glance

Start indoors Plant outside Fall planting

The chance of frost, by date

1 year in 10Half of years9 years in 10
Spring frost after April 13March 31March 15
Fall frost before November 1November 15December 1

Frost here means 32°F or colder. Read across: in 1 year in 10, spring frost carries on past the first date, which is why that date is the safe-to-plant date.

Hard freeze (28°F)

A hard freeze kills most garden plants, even hardy ones. The last one in spring usually comes around March 17 (April 1 in a late year), and the first one in fall around November 28.

Where these dates come from

NOAA weather station ASSATEAGUE, MD US (USC00180335), 1991–2020 climate normals. It's the nearest station for 1 zip code, all within 9 miles:

21829

Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.