Mukilteo weather in December
In December, Mukilteo sees average daytime highs of 44°F and overnight lows near 38°F, with 9.1 in of precipitation across 19.1 wet days and about 8.2 hours of daylight. It is the 12th-warmest and 3rd-wettest month of the year here.
Day-to-day highs hold fairly steady near 44°F through the month. The sky is clear or mostly clear about 13% of the time in December, and the air most often feels dry.
Daylight stretches from about 8 h 30 min at the start of December to 8 h 12 min by month's end. Set against the rest of the year, December is Mukilteo's 12th-clearest and 1st-windiest month. For the whole year in context, see Mukilteo's year-round climate.
- Daytime high
- 44°
- 12th warmest
- Overnight low
- 38°
- 1st coldest
- Precipitation
- 9.1 in
- 19.1 wet days
- Daylight
- 8 h 12 min
- 8:00 AM – 4:11 PM
- Cloud cover
- 77%
- 12th clearest
- Wind
- 7 mph
- 1st windiest
- Solar energy
- 0.84 kWh/m²
- Travel score
- 0.5
- 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 December
Day-to-day highs hold fairly steady near 44°F through the month.
A typical December day in Mukilteo reaches about 44°F in the afternoon and slips back to 38°F overnight — a 6°F spread between the day's warmth and the night's chill. On most days the high lands between 39°F and 49°F. Set against its neighbours, December runs about 5°F cooler than November and on par with January.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 45 | 45 | 45 | 45 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 43 |
| Avg low (°F) | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 45 | 38 |
| 2 | 45 | 38 |
| 3 | 45 | 38 |
| 4 | 45 | 38 |
| 5 | 44 | 38 |
| 6 | 44 | 38 |
| 7 | 44 | 38 |
| 8 | 44 | 38 |
| 9 | 44 | 38 |
| 10 | 44 | 38 |
| 11 | 44 | 38 |
| 12 | 44 | 38 |
| 13 | 44 | 38 |
| 14 | 44 | 38 |
| 15 | 44 | 38 |
| 16 | 44 | 38 |
| 17 | 44 | 38 |
| 18 | 44 | 38 |
| 19 | 44 | 38 |
| 20 | 44 | 38 |
| 21 | 44 | 38 |
| 22 | 43 | 37 |
| 23 | 43 | 37 |
| 24 | 43 | 37 |
| 25 | 43 | 37 |
| 26 | 43 | 37 |
| 27 | 43 | 37 |
| 28 | 43 | 37 |
| 29 | 43 | 37 |
| 30 | 43 | 37 |
| 31 | 43 | 37 |
How December really feels in Mukilteo
Once humidity and wind are folded in, December averages 0 days that feel above 90°F and 14 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
The story in December is cold — wind chill drags the overnight "feels like" below the raw low.
Mukilteo weather by month
How December compares with the rest of the year at a glance. December is the 12th-warmest and 3rd-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 45° / 38° | 9.1 | 19.3 | 5 | 8.6 | 0.7 |
| Feb | 47° / 38° | 5.8 | 15.4 | 4.2 | 9.9 | 1.2 |
| Mar | 50° / 40° | 7.0 | 19.1 | 3.1 | 11.6 | 1.8 |
| Apr | 54° / 43° | 5.2 | 16 | 0.8 | 13.4 | 2.8 |
| May | 60° / 47° | 3.5 | 12.3 | 0.1 | 14.9 | 4.5 |
| Jun | 64° / 51° | 3.1 | 10.6 | 0 | 15.7 | 5.6 |
| Jul | 69° / 55° | 1.5 | 6.1 | 0 | 15.4 | 7.3 |
| Aug | 70° / 55° | 1.7 | 6.1 | 0 | 14.1 | 7.4 |
| Sep | 65° / 52° | 3.3 | 9.4 | 0 | 12.4 | 6.1 |
| Oct | 56° / 46° | 7.1 | 15 | 0 | 10.6 | 3.5 |
| Nov | 48° / 41° | 10.0 | 19.3 | 1.9 | 9 | 1.4 |
| Dec | 44° / 38° | 9.1 | 19.1 | 5.3 | 8.2 | 0.5 |
Cloud cover in December
The sky is clear or mostly clear about 13% of the time in December, the cloudiest month of the year.
Beyond those clear spells, partly cloudy skies cover about 9% of December, with mostly cloudy or overcast conditions the remaining 78%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 24 | 24 | 22 | 21 | 21 | 21 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 23 |
| Cloudier (%) | 74 | 74 | 74 | 74 | 75 | 75 | 75 | 76 | 76 | 78 | 79 | 79 | 79 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 80 | 80 | 79 | 79 | 79 | 79 | 78 | 78 | 78 | 77 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 26 | 74 |
| 2 | 26 | 74 |
| 3 | 26 | 74 |
| 4 | 26 | 74 |
| 5 | 25 | 75 |
| 6 | 25 | 75 |
| 7 | 25 | 75 |
| 8 | 24 | 76 |
| 9 | 24 | 76 |
| 10 | 22 | 78 |
| 11 | 21 | 79 |
| 12 | 21 | 79 |
| 13 | 21 | 79 |
| 14 | 19 | 81 |
| 15 | 19 | 81 |
| 16 | 19 | 81 |
| 17 | 19 | 81 |
| 18 | 19 | 81 |
| 19 | 19 | 81 |
| 20 | 19 | 81 |
| 21 | 19 | 81 |
| 22 | 20 | 80 |
| 23 | 20 | 80 |
| 24 | 21 | 79 |
| 25 | 21 | 79 |
| 26 | 21 | 79 |
| 27 | 21 | 79 |
| 28 | 22 | 78 |
| 29 | 22 | 78 |
| 30 | 22 | 78 |
| 31 | 23 | 77 |
Chance of precipitation in December
Mukilteo gets around 9.1 in of rain and snow over 19.1 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 63% and peaks near 65% on the wettest days, and about 5 days bring snow.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 62 | 61 | 61 | 61 | 61 | 61 | 61 | 61 | 62 | 62 | 63 | 64 | 64 | 65 | 65 | 65 | 65 | 65 | 65 | 64 | 64 | 64 | 63 | 63 | 63 | 62 | 62 | 62 | 63 | 63 | 63 |
| Snow chance (%) | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 15 | 16 | 16 | 17 | 17 | 18 | 19 | 19 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 62 | 13 |
| 2 | 61 | 13 |
| 3 | 61 | 13 |
| 4 | 61 | 13 |
| 5 | 61 | 13 |
| 6 | 61 | 13 |
| 7 | 61 | 13 |
| 8 | 61 | 13 |
| 9 | 62 | 14 |
| 10 | 62 | 14 |
| 11 | 63 | 14 |
| 12 | 64 | 15 |
| 13 | 64 | 16 |
| 14 | 65 | 16 |
| 15 | 65 | 17 |
| 16 | 65 | 17 |
| 17 | 65 | 18 |
| 18 | 65 | 19 |
| 19 | 65 | 19 |
| 20 | 64 | 20 |
| 21 | 64 | 20 |
| 22 | 64 | 20 |
| 23 | 63 | 21 |
| 24 | 63 | 21 |
| 25 | 63 | 21 |
| 26 | 62 | 21 |
| 27 | 62 | 21 |
| 28 | 62 | 20 |
| 29 | 63 | 20 |
| 30 | 63 | 20 |
| 31 | 63 | 20 |
Humidity in December
Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Dry (%) | |
|---|---|
| 1 | 100 |
| 2 | 100 |
| 3 | 100 |
| 4 | 100 |
| 5 | 100 |
| 6 | 100 |
| 7 | 100 |
| 8 | 100 |
| 9 | 100 |
| 10 | 100 |
| 11 | 100 |
| 12 | 100 |
| 13 | 100 |
| 14 | 100 |
| 15 | 100 |
| 16 | 100 |
| 17 | 100 |
| 18 | 100 |
| 19 | 100 |
| 20 | 100 |
| 21 | 100 |
| 22 | 100 |
| 23 | 100 |
| 24 | 100 |
| 25 | 100 |
| 26 | 100 |
| 27 | 100 |
| 28 | 100 |
| 29 | 100 |
| 30 | 100 |
| 31 | 100 |
Wind in December
Winds average 7 mph in December, the windiest month of the year.
Across December, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 8 | light breeze |
| 2 | 8 | light breeze |
| 3 | 8 | light breeze |
| 4 | 8 | light breeze |
| 5 | 8 | light breeze |
| 6 | 8 | light breeze |
| 7 | 8 | light breeze |
| 8 | 8 | light breeze |
| 9 | 8 | light breeze |
| 10 | 8 | light breeze |
| 11 | 8 | light breeze |
| 12 | 8 | light breeze |
| 13 | 8 | light breeze |
| 14 | 8 | light breeze |
| 15 | 8 | light breeze |
| 16 | 8 | light breeze |
| 17 | 8 | light breeze |
| 18 | 7 | light breeze |
| 19 | 7 | light breeze |
| 20 | 7 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 7 | calm |
| 25 | 7 | calm |
| 26 | 7 | calm |
| 27 | 7 | calm |
| 28 | 7 | calm |
| 29 | 7 | calm |
| 30 | 7 | calm |
| 31 | 7 | calm |
Sunrise & sunset in December
Daylight runs from about 8 h 30 min at the start of December to 8 h 12 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 18 minutes over December. Sunrise moves from 7:45 AM to 8:06 AM, and sunset from 4:13 PM to 4:19 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 8.5 | 8.4 | 8.4 | 8.4 | 8.4 | 8.3 | 8.3 | 8.3 | 8.3 | 8.3 | 8.3 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 | 8.2 |
| Sunrise (AM) | 7:45 | 7:46 | 7:47 | 7:48 | 7:50 | 7:51 | 7:52 | 7:53 | 7:54 | 7:55 | 7:56 | 7:56 | 7:57 | 7:58 | 7:59 | 8:00 | 8:00 | 8:01 | 8:01 | 8:02 | 8:03 | 8:03 | 8:04 | 8:04 | 8:04 | 8:05 | 8:05 | 8:05 | 8:05 | 8:05 | 8:06 |
| Sunset (PM) | 4:13 | 4:13 | 4:12 | 4:12 | 4:12 | 4:11 | 4:11 | 4:11 | 4:11 | 4:11 | 4:11 | 4:11 | 4:11 | 4:11 | 4:11 | 4:11 | 4:11 | 4:12 | 4:12 | 4:12 | 4:13 | 4:13 | 4:14 | 4:14 | 4:15 | 4:16 | 4:16 | 4:17 | 4:18 | 4:18 | 4:19 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 8.5 | 7:45 | 4:13 |
| 2 | 8.4 | 7:46 | 4:13 |
| 3 | 8.4 | 7:47 | 4:12 |
| 4 | 8.4 | 7:48 | 4:12 |
| 5 | 8.4 | 7:50 | 4:12 |
| 6 | 8.3 | 7:51 | 4:11 |
| 7 | 8.3 | 7:52 | 4:11 |
| 8 | 8.3 | 7:53 | 4:11 |
| 9 | 8.3 | 7:54 | 4:11 |
| 10 | 8.3 | 7:55 | 4:11 |
| 11 | 8.3 | 7:56 | 4:11 |
| 12 | 8.2 | 7:56 | 4:11 |
| 13 | 8.2 | 7:57 | 4:11 |
| 14 | 8.2 | 7:58 | 4:11 |
| 15 | 8.2 | 7:59 | 4:11 |
| 16 | 8.2 | 8:00 | 4:11 |
| 17 | 8.2 | 8:00 | 4:11 |
| 18 | 8.2 | 8:01 | 4:12 |
| 19 | 8.2 | 8:01 | 4:12 |
| 20 | 8.2 | 8:02 | 4:12 |
| 21 | 8.2 | 8:03 | 4:13 |
| 22 | 8.2 | 8:03 | 4:13 |
| 23 | 8.2 | 8:04 | 4:14 |
| 24 | 8.2 | 8:04 | 4:14 |
| 25 | 8.2 | 8:04 | 4:15 |
| 26 | 8.2 | 8:05 | 4:16 |
| 27 | 8.2 | 8:05 | 4:16 |
| 28 | 8.2 | 8:05 | 4:17 |
| 29 | 8.2 | 8:05 | 4:18 |
| 30 | 8.2 | 8:05 | 4:18 |
| 31 | 8.2 | 8:06 | 4:19 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 0.84 kWh/m² — the year's lowest.
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 — December's 0.84 kWh/m² sits near the bottom.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.9 | 0.9 |
| Level | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 0.9 | Dim |
| 2 | 0.9 | Dim |
| 3 | 0.9 | Dim |
| 4 | 0.9 | Dim |
| 5 | 0.9 | Dim |
| 6 | 0.9 | Dim |
| 7 | 0.8 | Dim |
| 8 | 0.8 | Dim |
| 9 | 0.8 | Dim |
| 10 | 0.8 | Dim |
| 11 | 0.8 | Dim |
| 12 | 0.8 | Dim |
| 13 | 0.8 | Dim |
| 14 | 0.8 | Dim |
| 15 | 0.8 | Dim |
| 16 | 0.8 | Dim |
| 17 | 0.8 | Dim |
| 18 | 0.8 | Dim |
| 19 | 0.8 | Dim |
| 20 | 0.8 | Dim |
| 21 | 0.8 | Dim |
| 22 | 0.8 | Dim |
| 23 | 0.8 | Dim |
| 24 | 0.8 | Dim |
| 25 | 0.8 | Dim |
| 26 | 0.8 | Dim |
| 27 | 0.8 | Dim |
| 28 | 0.8 | Dim |
| 29 | 0.8 | Dim |
| 30 | 0.9 | Dim |
| 31 | 0.9 | Dim |
Hazard calendar for Mukilteo
In December, Mukilteo sits inside its rainy season season. The full year is below, with each hazard's peak months called out.
Mukilteo's rainy season runs October–April, when most of the year's rain falls.
Is December a good time to visit Mukilteo?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a weaker month for outdoor sightseeing in Mukilteo.
What to pack for Mukilteo in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Mukilteo sees daytime highs around 44°F and nights near 38°F. Pack a warm layer and rain gear. Worth having: a heavy coat. About 19 days see rain.
Sea temperature near Mukilteo in December
The nearest coast averages about 47°F in December — 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 46 | 46 | 47 | 48 | 50 | 52 | 53 | 53 | 53 | 50 | 49 | 47 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 46 | Bracing |
| Feb | 46 | Bracing |
| Mar | 47 | Bracing |
| Apr | 48 | Bracing |
| May | 50 | Bracing |
| Jun | 52 | Bracing |
| Jul | 53 | Bracing |
| Aug | 53 | Bracing |
| Sep | 53 | Bracing |
| Oct | 50 | Bracing |
| Nov | 49 | Bracing |
| Dec | 47 | Bracing |
UV index in Mukilteo in December
Clear-sky midday UV in December peaks around 1. 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 1 | 4 | 5 | 7 | 6 | 8 | 6 | 4 | 3 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | High | High | Very high | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 1 | Low |
| Mar | 4 | Moderate |
| Apr | 5 | Moderate |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 8 | Very high |
| Aug | 6 | High |
| Sep | 4 | Moderate |
| Oct | 3 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Air quality in Mukilteo in December
Average fine-particle pollution (PM2.5) through the year — so you can see where December 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 8 | 10 | 12 | 12 | 13 | 11 | 10 | 20 | 18 | 11 | 7 | 6 |
| Level | Good | Good | Moderate | Good | Moderate | Good | Good | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 10 | Good |
| Mar | 12 | Moderate |
| Apr | 12 | Good |
| May | 13 | Moderate |
| Jun | 11 | Good |
| Jul | 10 | Good |
| Aug | 20 | Moderate |
| Sep | 18 | Moderate |
| Oct | 11 | Good |
| Nov | 7 | Good |
| Dec | 6 | Good |
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.
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
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).