Arlington weather in March

In March, Arlington sees average daytime highs of 51°F and overnight lows near 38°F, with 7.6 in of precipitation across 19.6 wet days and about 11.6 hours of daylight. It is the 8th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 49°F in the first days to 53°F by the end. The sky is clear or mostly clear about 15% of the time in March, and the air most often feels dry.

Daylight stretches from about 10 h 42 min at the start of March to 12 h 30 min by month's end. Set against the rest of the year, March is Arlington's 9th-clearest and 4th-windiest month. For the whole year in context, see Arlington's year-round climate.

Daytime high
51°
8th warmest
Overnight low
38°
4th coldest
Precipitation
7.6 in
19.6 wet days
Daylight
11 h 36 min
6:31 AM – 6:05 PM
Cloud cover
74%
9th clearest
Wind
6 mph
4th windiest
Solar energy
2.88 kWh/m²
Travel score
1.9
out of 10

Arlington is city in northern Snohomish County, Washington, United States.

Density
790/km²
people per km²
Founded
1903

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 49°F in the first days to 53°F by the end.

A typical March day in Arlington reaches about 51°F in the afternoon and slips back to 38°F overnight — a 13°F spread between the day's warmth and the night's chill. On most days the high lands between 44°F and 59°F. Set against its neighbours, March runs about 4°F warmer than February and about 5°F cooler than April.

20°30°40°50°60°70°151015202531
Avg high (°F)Avg low (°F)
14836
24836
34937
44937
54937
64937
74937
85037
95038
105038
115038
125038
135138
145138
155138
165138
175139
185139
195239
205239
215239
225239
235239
245239
255239
265339
275339
285340
295340
305340
315340

How March really feels in Arlington

Once humidity and wind are folded in, March averages 0 days that feel above 90°F and 3 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
3
wind chill below the day's low

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

Arlington weather by month

How March compares with the rest of the year at a glance. March is the 8th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan44° / 36°9.319.15.38.60.6
Feb47° / 36°6.115.54.59.91.2
Mar51° / 38°7.619.63.711.61.9
Apr56° / 42°5.616.4113.43.2
May62° / 47°3.812.10.114.95.0
Jun66° / 51°2.89.8015.86.0
Jul72° / 55°1.35.2015.57.8
Aug73° / 55°1.65.5014.17.8
Sep67° / 50°3.48.8012.46.5
Oct57° / 44°7.214.9010.63.7
Nov48° / 38°10.419.22.291.4
Dec43° / 35°9.319.26.18.20.4

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 12% of March, with mostly cloudy or overcast conditions the remaining 73%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13169
23070
32971
42971
52971
62872
72872
82773
92773
102773
112773
122674
132575
142674
152674
162575
172575
182575
192674
202674
212674
222674
232773
242872
252773
262773
272773
282773
292773
302773
312773

Chance of precipitation in March

Any precipitationSnow

Arlington gets around 7.6 in of rain and snow over 19.6 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 62% and peaks near 65% on the wettest days, and about 4 days bring snow.

0%20%40%60%80%151015202531
Rain chance (%)Snow chance (%)
15817
25917
35916
45915
56015
66115
76214
86214
96314
106313
116413
126413
136413
146513
156512
166512
176512
186512
196511
206411
216411
226311
236311
246210
256210
266110
27619
28609
29609
30608
31598

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in March

Winds average 6 mph in March.

Across March, daily wind ranges from about 5 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
15calm
25calm
35calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in March

DaylightNight

Daylight runs from about 10 h 42 min at the start of March to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 108 minutes over March. Sunrise moves from 7:01 AM to 6:00 AM, and sunset from 5:42 PM to 6:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.77:015:42
210.77:005:44
310.86:585:45
410.96:565:47
510.96:545:48
611.06:525:50
711.06:505:51
811.16:485:53
911.16:465:54
1011.26:445:56
1111.36:425:57
1211.36:405:59
1311.46:376:01
1411.46:356:02
1511.56:336:04
1611.66:316:05
1711.66:296:07
1811.76:276:08
1911.76:256:10
2011.86:236:11
2111.96:216:13
2211.96:196:14
2312.06:166:16
2412.06:146:17
2512.16:126:19
2612.26:106:20
2712.26:086:22
2812.36:066:23
2912.36:046:24
3012.46:026:26
3112.56:006:27

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 2.88 kWh/m².

For context, solar energy here swings from a low near 0.83 kWh/m² to a high of 6.16 kWh/m² in July across the year — March's 2.88 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
12.4Moderate
22.4Moderate
32.4Moderate
42.4Moderate
52.5Moderate
62.5Moderate
72.5Moderate
82.5Moderate
92.6Moderate
102.6Moderate
112.6Moderate
122.7Moderate
132.7Moderate
142.8Moderate
152.8Moderate
162.9Moderate
172.9Moderate
183.0Moderate
193.0Moderate
203.1Moderate
213.1Moderate
223.2Moderate
233.2Moderate
243.3Moderate
253.3Moderate
263.4Moderate
273.4Moderate
283.4Moderate
293.5Moderate
303.5Moderate
313.6Moderate
Planning a trip in March

Hazard calendar for Arlington

In seasonPeak

In March, Arlington sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Arlington's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is March a good time to visit Arlington?

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

1.9
Sightseeing
8th-best month of the year
0.0
Beach & pool
8th-best month of the year

March is a weaker month for outdoor sightseeing in Arlington.

What to pack for Arlington in March

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

In March, Arlington sees daytime highs around 51°F and nights near 38°F. Pack a warm layer and rain gear. About 20 days see rain.

a warm layerrain gear

Sea temperature near Arlington in March

The nearest coast averages about 47°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 35 mi away) is warmest in August at about 53°F and coldest in February near 46°F.

The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.

45°50°55°JanFebMarAprMayJunJulAugSepOctNovDecbracing
Sea temperature (°F)Comfort
Jan46Bracing
Feb46Bracing
Mar47Bracing
Apr48Bracing
May50Bracing
Jun52Bracing
Jul53Bracing
Aug53Bracing
Sep53Bracing
Oct50Bracing
Nov49Bracing
Dec47Bracing

UV index in Arlington in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Arlington peaks around July 17 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 18 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 17UV 8Dec 18UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar4Moderate
Apr5Moderate
May7High
Jun6High
Jul8Very high
Aug6High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Arlington 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 Arlington is worst in August — around 20 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (December, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModerateGoodModerateGoodAug 2119 µg/m³Dec 157 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb10Good
Mar12Moderate
Apr12Good
May13Moderate
Jun11Good
Jul10Good
Aug20Moderate
Sep18Moderate
Oct11Good
Nov7Good
Dec6Good
Location & terrain

Where is Arlington?

Arlington sits at 48.2°N, 122.1°W, 115 ft above sea level, in United States. The nearest listed city is Marysville, 11 mi away.

Topography around Arlington

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

Within 2 miles, the terrain around Arlington has only modest variations in elevation — a maximum elevation change of 479 ft around an average of 157 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,297 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 10,755 ft.

The land around Arlington is covered by trees (51%) and grassland (32%) within 2 miles, trees (76%) within 10 miles, and trees (66%) and water (21%) within 50 miles.

2 miles
479 ft
10 miles
3,297 ft
50 miles
10,755 ft
treesgrasslandcroplandartificial surfacesbare terrainsnow and icewater
March weather nearby: Marysville 11 mi · Lake Stevens 13 mi · West Lake Stevens 14 mi · Everett 16 mi · Mount Vernon 18 mi · Mukilteo 19 mi · Eastmont 21 mi · Silver Firs 23 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 Arlington (48.1987°, -122.1251°, elevation 115 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. 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).