Arnold weather in March

In March, Arnold sees average daytime highs of 51°F and overnight lows near 38°F, with 4.4 in of precipitation across 10.9 wet days and about 11.7 hours of daylight. It is the 9th-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 47°F in the first days to 55°F by the end. The sky is clear or mostly clear about 30% of the time in March, and the air most often feels dry.

Daylight stretches from about 11 hours at the start of March to 12 h 18 min by month's end. Set against the rest of the year, March is Arnold's 11th-clearest and 2nd-windiest month. For the whole year in context, see Arnold's year-round climate.

Daytime high
51°
9th warmest
Overnight low
38°
4th coldest
Precipitation
4.4 in
10.9 wet days
Daylight
11 h 42 min
6:25 AM – 6:06 PM
Cloud cover
61%
11th clearest
Wind
10 mph
2nd windiest
Solar energy
4.1 kWh/m²
Travel score
2.4
out of 10

Arnold is census designated place, Maryland, United States.

Density
658/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 47°F in the first days to 55°F by the end.

A typical March day in Arnold reaches about 51°F in the afternoon and slips back to 38°F overnight — a 12°F spread between the day's warmth and the night's chill. On most days the high lands between 41°F and 62°F. Set against its neighbours, March runs about 7°F warmer than February and about 11°F cooler than April.

20°30°40°50°60°70°151015202531
Avg high (°F)Avg low (°F)
14735
24735
34735
44735
54835
64836
74836
84836
94936
104937
114937
124937
135037
145038
155038
165038
175138
185139
195139
205139
215240
225240
235340
245341
255341
265442
275442
285542
295543
305543
315643

How March really feels in Arnold

Once humidity and wind are folded in, March averages 0 days that feel above 90°F and 17 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
17
wind chill below the day's low

The story in March is cold — wind chill drags the overnight "feels like" below the raw low.

Arnold weather by month

How March compares with the rest of the year at a glance. March is the 9th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan41° / 31°3.592.79.60.1
Feb43° / 32°3.392.810.50.6
Mar51° / 38°4.410.91.611.72.4
Apr61° / 49°3.710.20.1135.1
May70° / 58°3.810.8014.16.4
Jun79° / 68°3.610.8014.76.4
Jul84° / 73°4.211.7014.55.4
Aug82° / 72°4.010.2013.56.1
Sep76° / 66°4.69.2012.37.0
Oct66° / 55°3.98.20116.3
Nov55° / 44°3.38.10.19.93.7
Dec46° / 36°4.19.51.39.31.2

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 15% of March, with mostly cloudy or overcast conditions the remaining 55%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24654
34654
44852
54852
64951
74951
84951
94951
104951
114852
124951
134852
144753
154753
164654
174555
184456
194357
204258
214258
224159
234159
244159
254159
264258
274159
284258
294258
304456
314456

Chance of precipitation in March

Any precipitationSnow

Arnold gets around 4.4 in of rain and snow over 10.9 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 35% and peaks near 38% on the wettest days, and about 2 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1369
2368
3358
4358
5358
6347
7347
8347
9347
10346
11346
12346
13335
14335
15335
16334
17334
18344
19344
20344
21354
22353
23363
24363
25363
26373
27372
28372
29372
30382
31382

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

Most of March feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, March lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
14991
15991
16991
17991
18991
19991
20991
21991
22991
23991
24982
25982
26982
27982
28982
29982
30982
31982

Wind in March

Winds average 10 mph in March.

Across March, daily wind ranges from about 9 mph on the calmest days to 10 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
110light breeze
210light breeze
310light breeze
410light breeze
510light breeze
610light breeze
710light breeze
810light breeze
910light breeze
1010light breeze
1110light breeze
1210light breeze
1310light breeze
1410light breeze
1510light breeze
1610light breeze
179light breeze
189light breeze
199light breeze
209light breeze
219light breeze
229light breeze
239light breeze
249light breeze
259light breeze
269light breeze
279light breeze
289light breeze
299light breeze
309light breeze
319light breeze

Sunrise & sunset in March

DaylightNight

Daylight runs from about 11 hours at the start of March to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 78 minutes over March. Sunrise moves from 6:48 AM to 6:01 AM, and sunset from 5:51 PM to 6:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:485:51
211.16:475:52
311.16:455:53
411.26:445:54
511.26:425:55
611.36:415:56
711.36:395:57
811.36:385:58
911.46:365:59
1011.46:356:00
1111.56:336:01
1211.56:316:02
1311.66:306:03
1411.66:286:04
1511.66:276:05
1611.76:256:06
1711.76:246:07
1811.86:226:08
1911.86:206:09
2011.96:196:10
2111.96:176:11
2211.96:156:12
2312.06:146:13
2412.06:126:14
2512.16:116:15
2612.16:096:16
2712.26:076:17
2812.26:066:18
2912.36:046:19
3012.36:026:20
3112.36:016:21

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.1 kWh/m².

For context, solar energy here swings from a low near 1.94 kWh/m² to a high of 6.1 kWh/m² in June across the year — March's 4.1 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
13.6Moderate
23.6Moderate
33.7Moderate
43.7Moderate
53.8Moderate
63.8Moderate
73.9Moderate
83.9Moderate
94.0Moderate
104.0Moderate
114.0Bright
124.0Bright
134.1Bright
144.1Bright
154.1Bright
164.1Bright
174.2Bright
184.2Bright
194.2Bright
204.2Bright
214.2Bright
224.3Bright
234.3Bright
244.3Bright
254.4Bright
264.4Bright
274.5Bright
284.5Bright
294.5Bright
304.6Bright
314.6Bright
Planning a trip in March

Hazard calendar for Arnold

In seasonPeak

None of Arnold's seasonal hazards are active in March. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Arnold sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is March a good time to visit Arnold?

Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

2.4
Sightseeing
9th-best month of the year
0.0
Beach & pool
9th-best month of the year

March is a weaker month for outdoor sightseeing in Arnold.

What to pack for Arnold in March

From March's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In March, Arnold sees daytime highs around 51°F and nights near 38°F. Pack a warm layer. Worth having: rain gear. About 11 days see rain.

a warm layerrain gear

Sea temperature near Arnold in March

The nearest coast averages about 40°F in March — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 9 mi away) is warmest in August at about 78°F and coldest in February near 36°F.

It's comfortable for a long swim from Jun 16 to Oct 5 — about 3.7 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan38Bracing
Feb36Bracing
Mar40Bracing
Apr47Bracing
May58Bracing
Jun68Refreshing
Jul76Warm
Aug78Warm
Sep74Refreshing
Oct65Cool
Nov53Bracing
Dec44Bracing

UV index in Arnold in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Arnold peaks around July 10 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 10UV 9Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug6High
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Arnold in March

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where March falls, not just the annual average.

Air quality in Arnold is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1216 µg/m³Nov 118 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar13Moderate
Apr13Moderate
May15Moderate
Jun16Moderate
Jul17Moderate
Aug14Moderate
Sep12Good
Oct9Good
Nov8Good
Dec10Good
Location & terrain

Where is Arnold?

Arnold sits at 39.0°N, 76.5°W, 128 ft above sea level, in United States. The nearest listed city is Severna Park, 3.7 mi away.

Topography around Arnold

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Arnold.

Within 2 miles, the terrain around Arnold has only modest variations in elevation — a maximum elevation change of 240 ft around an average of 95 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 344 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,257 ft.

The land around Arnold is covered by trees (71%) within 2 miles, trees (47%) and water (41%) within 10 miles, and trees (53%) within 50 miles.

2 miles
240 ft
10 miles
344 ft
50 miles
1,257 ft
treesgrasslandcroplandartificial surfaceswaterwetland
March weather nearby: Severna Park 3.7 mi · Annapolis 3.7 mi · Parole 4.3 mi · Lake Shore 5.0 mi · Pasadena 6.8 mi · Green Haven 8.1 mi · South Gate 9.3 mi · Crofton 9.9 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Arnold (39.0321°, -76.5027°, elevation 128 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).