Mukilteo weather in May

In May, Mukilteo sees average daytime highs of 60°F and overnight lows near 47°F, with 3.5 in of precipitation across 12.3 wet days and about 14.9 hours of daylight. It is the 5th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 58°F in the first days to 62°F by the end. The sky is clear or mostly clear about 23% of the time in May, and the air most often feels dry.

Daylight stretches from about 14 h 12 min at the start of May to 15 h 30 min by month's end. Set against the rest of the year, May is Mukilteo's 6th-clearest and 8th-windiest month. For the whole year in context, see Mukilteo's year-round climate.

Daytime high
60°
5th warmest
Overnight low
47°
8th coldest
Precipitation
3.5 in
12.3 wet days
Daylight
14 h 54 min
4:37 AM – 7:34 PM
Cloud cover
65%
6th clearest
Wind
5 mph
8th windiest
Solar energy
5.21 kWh/m²
Travel score
4.5
out of 10

Mukilteo is waterfront city in Snohomish County, Washington, United States.

Density
862/km²
people per km²
Founded
1858

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 58°F in the first days to 62°F by the end.

A typical May day in Mukilteo reaches about 60°F in the afternoon and slips back to 47°F overnight — a 12°F spread between the day's warmth and the night's chill. On most days the high lands between 52°F and 69°F. Set against its neighbours, May runs about 6°F warmer than April and about 4°F cooler than June.

30°40°50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
15745
25745
35845
45846
55846
65846
75846
85946
95946
105947
115947
125947
136047
146047
156047
166048
176048
186048
196048
206148
216149
226149
236149
246149
256149
266149
276249
286249
296249
306250
316250

How May really feels in Mukilteo

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

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Mukilteo weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan45° / 38°9.119.358.60.7
Feb47° / 38°5.815.44.29.91.2
Mar50° / 40°7.019.13.111.61.8
Apr54° / 43°5.2160.813.42.8
May60° / 47°3.512.30.114.94.5
Jun64° / 51°3.110.6015.75.6
Jul69° / 55°1.56.1015.47.3
Aug70° / 55°1.76.1014.17.4
Sep65° / 52°3.39.4012.46.1
Oct56° / 46°7.115010.63.5
Nov48° / 41°10.019.31.991.4
Dec44° / 38°9.119.15.38.20.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23862
33961
43961
53961
64159
74060
84060
94060
104159
114060
123961
133961
143862
153862
163862
173664
183664
193664
203664
213565
223565
233466
243565
253565
263565
273565
283664
293664
303664
313664

Chance of precipitation in May

Any precipitation

Mukilteo gets around 3.5 in of rain and snow over 12.3 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 40% and peaks near 46% on the wettest days, and about 0 day brings snow.

0%20%40%60%151015202531
Rain chance (%)
146
245
345
444
543
642
741
840
940
1039
1139
1238
1338
1438
1538
1638
1738
1838
1938
2038
2139
2239
2339
2439
2539
2639
2739
2839
2939
3039
3139

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May 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 (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
21991
22991
23991
24991
25991
26991
27991
28991
29991
30991
31982

Wind in May

Winds average 5 mph in May.

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

0246810151015202531
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 14 h 12 min at the start of May to 15 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 78 minutes over May. Sunrise moves from 5:00 AM to 4:22 AM, and sunset from 7:13 PM to 7:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.25:007:13
214.34:587:14
314.34:567:16
414.44:557:17
514.44:537:19
614.54:527:20
714.54:507:22
814.64:487:23
914.64:477:24
1014.74:457:26
1114.74:447:27
1214.84:437:28
1314.84:417:30
1414.94:407:31
1514.94:387:32
1614.94:377:34
1715.04:367:35
1815.04:357:36
1915.14:337:38
2015.14:327:39
2115.14:317:40
2215.24:307:41
2315.24:297:42
2415.34:287:44
2515.34:277:45
2615.34:267:46
2715.44:257:47
2815.44:247:48
2915.44:237:49
3015.54:237:50
3115.54:227:51

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.21 kWh/m².

For context, solar energy here swings from a low near 0.84 kWh/m² to a high of 6.04 kWh/m² in July across the year — May's 5.21 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.1Bright
55.1Bright
65.1Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in May

Hazard calendar for Mukilteo

In seasonPeak

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

Mukilteo'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 May a good time to visit Mukilteo?

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

4.5
Sightseeing
5th-best month of the year
0.4
Beach & pool
5th-best month of the year

May is a reasonable time to visit Mukilteo for sightseeing.

What to pack for Mukilteo in May

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

In May, Mukilteo sees daytime highs around 60°F and nights near 47°F. Worth packing: a warm layer, rain gear and sun protection. About 12 days see rain.

a warm layerrain gearsun protection

Sea temperature near Mukilteo in May

The nearest coast averages about 50°F in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 29 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 Mukilteo in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mukilteo 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 Mukilteo in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Mukilteo 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 Mukilteo?

Mukilteo sits at 47.9°N, 122.3°W, 105 ft above sea level, in United States. The nearest listed city is Everett, 5.6 mi away.

Topography around Mukilteo

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

Within 2 miles, the terrain around Mukilteo has only modest variations in elevation — a maximum elevation change of 630 ft around an average of 157 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 682 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 7,589 ft.

The land around Mukilteo is covered by water (60%) and trees (24%) within 2 miles, water (41%) and trees (37%) within 10 miles, and trees (67%) and water (21%) within 50 miles.

2 miles
630 ft
10 miles
682 ft
50 miles
7,589 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Everett 5.6 mi · Picnic Point-North Lynnwood 5.6 mi · Eastmont 6.8 mi · Martha Lake 6.8 mi · Mill Creek 7.5 mi · Lynnwood 8.7 mi · Silver Firs 8.7 mi · Mill Creek East 9.3 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 Mukilteo (47.9445°, -122.3046°, elevation 105 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).