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Climate in Delmar · NOAA 1991–2020 normals

Delmar’s winters are milder and less snowy than most of the U.S.

A typical July afternoon reaches 89°, a January night drops to 27°, and about 8 inches of snow falls in a normal winter.

Milder January nights than 68% of U.S. towns#46Mildest winters  of 216 in MD
Less snow than 67% of U.S. towns#11Least snow  of 214 in MD
All MD rankings →

A year in Delmar at a glance

Each month’s typical high and low, and what it brings.

Jan46°27°
Feb49°28° 3" snow
Mar56°35°
Apr67°44° Last frost ~Apr 2
May76°53° 1 day 90°+
Jun84°62° 6 days 90°+
Jul89°68° 15 days 90°+
Aug86°66° 7 days 90°+Wettest
Sep80°59° 3 days 90°+
Oct70°48°
Nov now59°38° First frost ~Nov 10
Dec50°31°

What stands out about Delmar’s climate

Compared with towns across the U.S., with Delmar’s place in Maryland beside it.

A normal year

What a year in Delmar feels like

Typical highs and lows by season and by month, from NOAA’s 30-year normals.

Winter
48° / 29°
3 days with 1"+ of snow
Spring
67° / 44°
Last frost around Apr 2
Summer
86° / 65°
31 days reach 90°
Fall
70° / 48°
First frost around Nov 10
Best months to be outsideAprMayJunSepOctHighs of 62–84° and lows of 40° or more
Frost, heat & the growing season

About 222 frost-free days a year

In half of years the last 32° night comes by April 2 and the first by November 10. Frost and day counts come from NOAA’s station at Salisbury 2n, MD, 2.9 miles from the town’s center, at about the same height.

Short record. NOAA estimated Salisbury 2n, MD’s counts from 8 years of data and its neighbors’, not a full 30-year record.
72
nights at or below 32° in a normal year
33rd fewest of 216 in Maryland
Fewer freezing nights than 72% of U.S. towns
<1
nights at or below 0°
93rd fewest of 216 in Maryland
Fewer nights at or below 0° than 66% of U.S. towns
31
days that reach 90°
109th most of 216 in Maryland
More 90° days than 64% of U.S. towns
<1
days that reach 100°
56th fewest of 216 in Maryland
Fewer 100° days than 56% of U.S. towns
7bUSDA zone
Plant hardiness zone 7b

The 2023 USDA map puts Delmar’s center in zone 7b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 7°. Plant labels use the zone; frost dates tell you when to plant.

Freezing nights by month

Average nights at or below 32°

20
JFMAMJJASOND

90° days by month

Average days at 90° or more

15
JFMAMJJASOND
Rain & snow

About 8 inches of snow a winter

Snow, measured at Salisbury Wicomico Rgnl Airport, falls mostly in February. Precipitation (rain plus melted snow) adds up to 46 inches a year; August is the wettest month and February the driest. Rain or snow falls on about 122 days a year.

46"
Rain + melted snow a year
47th wettest of 216 in Maryland
Wetter than 66% of U.S. towns
8.0"
Snow in a normal winter
11th least snowy of 214 in Maryland
Less snow than 67% of U.S. towns
4 days
With 1"+ of snow on the ground
The fewest of 204 in Maryland
Fewer days with snow on the ground than 65% of U.S. towns

Rain + melted snow by month

Inches of water

5.0"
JFMAMJJASOND

Snowfall by month

Inches of snow

3"
JFMAMJJASOND
Heating & cooling

Heating and cooling a home in Delmar

73% of the work is heating. Months averaging under 55° run from November through March.

3,799 heating degree daysLess heating than 72% of U.S. towns
1,425 cooling degree daysMore cooling than 72% of U.S. towns

Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Salisbury 2n, MD.

Living here

Living with Delmar’s climate

What the numbers mean for a garden, a free afternoon and a bad-weather day.

The garden window

222 frost-free days in zone 7b. The last frost comes by Apr 2 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 10.

Get outside

Months with highs of 62–84° and lows of 40° or more: April, May, June, September and October. 0.7 miles of trails are waiting.

Parks & trails →
Storms and extremes

Of the yearly building losses FEMA expects in Delmar from natural hazards, hurricanes are the largest share (49%); heat waves, cold waves, winter storms and ice storms together are 12%. Normals are averages; the hazards page covers the extremes.

Natural hazards →
Next door & far away

Delmar and similar climates

TownRatings has no climate map of the towns around Delmar yet.

Climates most like Delmar’s, farther away

TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.

TownJan. lowJuly highPrecip.Snow
Delmar, MD27°89°46"8.0"
Collinsville, VA27°88°46"9.4"
Harrison, AR26°89°47"9.5"
Reidsville, NC29°88°46"7.3"
Mount Vernon, IN25°88°47"8.4"

Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.

Then and now

Warmer than it used to be

The last 30 years in Delmar averaged 2.0° warmer than the 1900s. The biggest change is in December (+3.1°).

+2.0°1991–2020 vs. 1901–2000

A bigger shift than in 91% of U.S. towns.

Winter+2.5°now 39°, was 36°
Spring+1.9°now 55°, was 53°
Summer+1.9°now 76°, was 74°
Fall+1.7°now 59°, was 57°

Change by month

JanFebMarAprMayJunJulAugSepOctNovDec

The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.

Compared with other towns

How Delmar compares

Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Delmar’s place among Maryland’s.

Summer heat89° July high
Hotter July afternoons than 70% of U.S. towns25th hottest of 216 in Maryland
Winter cold27° January low
Milder January nights than 68% of U.S. towns46th mildest of 216 in Maryland
Precipitation46" a year
Wetter than 66% of U.S. towns47th wettest of 216 in Maryland
Snow8.0" a winter
Less snow than 67% of U.S. towns11th least snowy of 214 in Maryland
Hot days31 days at 90°+
More 90° days than 64% of U.S. towns109th most of 216 in Maryland
Freezing nights72 a year
Fewer freezing nights than 72% of U.S. towns33rd fewest of 216 in Maryland
Growing season222 frost-free days
A longer frost-free season than 81% of U.S. towns31st longest of 216 in Maryland
Month by month

Delmar weather by month

Highs, lows and precipitation from NOAA’s grid at Delmar’s center; snow, wet days and snow on the ground from Salisbury Wicomico Rgnl Airport. 1991–2020 normals.

MonthHighLowRain + meltSnowWet daysSnow on ground30-yr range
January46°27°3.5"2.5"11231° – 43°
February49°28°3.0"3.4"10128° – 46°
March56°35°4.1"1.0"12140° – 54°
April67°44°3.5"0.2"11052° – 61°
May76°53°3.7"0.0"12059° – 71°
June84°62°4.0"0.0"11068° – 78°
July89°68°4.4"0.0"10073° – 82°
August86°66°5.0"0.0"9073° – 79°
September80°59°4.2"0.0"9067° – 75°
October70°48°3.9"0.0"9054° – 65°
November59°38°3.3"0.0"9042° – 53°
December50°31°3.7"0.9"11131° – 52°
Year68°47°46.2"8.0"1224
Year to year

How much a month can swing

A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 31° to 52°. August is the most reliable, staying within 7°.

Coldest to warmest month in 30 yearsNormal
Sources

Where Delmar’s numbers come from

Normals are 30-year averages, not a forecast. How TownRatings reads climate data →

  • Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Delmar’s center.
  • Snow: Salisbury Wicomico Rgnl Airport.
  • Frost, freezing nights, 90° and 100° days, heating and cooling: Salisbury 2n, MD, 2.9 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
  • Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
  • Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
  • Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).

Common questions about Delmar’s climate

What is the weather like in Delmar?

A typical July afternoon reaches 89°, a January night drops to 27°, and about 8 inches of snow falls in a normal winter. Milder January nights than 68% of U.S. towns; hotter July afternoons than 70% of U.S. towns.

How cold does it get in Delmar in winter?

January nights average 27°. About 72 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 31°.

How much snow does Delmar get?

About 8.0 inches in a normal winter at Salisbury Wicomico Rgnl Airport, most of it in February, with snow on the ground about 4 days a year.

How hot does it get in Delmar?

July, with a typical high of 89° and a low of 68°. About 31 days a year reach 90° (Salisbury 2n, MD).

When is the first and last frost in Delmar?

In half of years the last spring frost (32°) comes by April 2 and the first fall frost by November 10, about 222 frost-free days, at Salisbury 2n, MD.

What growing zone is Delmar in?

Zone 7b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 7°.

What is the best time of year to visit Delmar?

By one simple rule (highs of 62–84° and lows of 40° or more), April, May, June, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.

Is Delmar getting warmer?

Yes: 1991–2020 averaged 2.0° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 91% of U.S. towns.

Neighbors talk weather

Gardens, snow, and the best days of the year in Delmar.

Town Square →
Ask your neighbors

Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.