January weather forecast
Mukilteo, WA

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White buildings in neat, green fields near the iconic Mukilteo Lighthouse, Washington
White buildings in neat, green fields near the iconic Mukilteo Lighthouse, Washington

Weather in January

January is a chilly winter month in Mukilteo, Washington, with temperature in the range of an average low of 36.7°F (2.6°C) and an average high of 45°F (7.2°C).

Temperature

The average high-temperature in January, at a frosty 45°F (7.2°C), reveals a modest deviation from December's 42.6°F (5.9°C). An average low-temperature of 36.7°F (2.6°C) characterizes Mukilteo's January nights.

Humidity

In January, the average relative humidity in Mukilteo, Washington, is 83%.

Rainfall

In January, the rain falls for 18 days. Throughout January, 3.43" (87mm) of precipitation is accumulated. In Mukilteo, during the entire year, the rain falls for 173.1 days and collects up to 26.02" (661mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. In Mukilteo, in January, during 2.7 snowfall days, 1.73" (44mm) of snow is typically accumulated. In Mukilteo, during the entire year, snow falls for 16.3 days and aggregates up to 10.08" (256mm) of snow.

Ocean temperature

In Mukilteo, in January, the average water temperature is 45.5°F (7.5°C).
Note: In 45.5°F (7.5°C), even brief exposure to 55.4°F (13°C) feels biting, and anything less than 50°F (10°C) risks cold shock and impaired breathing, considering one's health.

Daylight

The average length of the day in January is 8h and 55min.
On the first day of the month, sunrise is at 7:58 am and sunset at 4:26 pm. On the last day of January, sunrise is at 7:37 am and sunset at 5:07 pm PST.

Sunshine

With an average of 4.4h of sunshine, January has the least sunshine of the year.

UV index

The months with the lowest UV index in Mukilteo, Washington, are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index, 2 in January, converts into the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
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Frequently asked questions

What are the temperatures in Mukilteo in January?

In Mukilteo, in January, the average high-temperature is 45°F (7.2°C), and the average low-temperature is 36.7°F (2.6°C).

What is the average humidity in January in Mukilteo?

In January, the average relative humidity in Mukilteo, Washington, is 83%.

How many days does it rain in January in Mukilteo?

In January, in Mukilteo, the rain falls for 18 days. Throughout January, 3.43" (87mm) of precipitation is accumulated.

How many days does it snow in January in Mukilteo?

In Mukilteo, Washington, in January, snow falls for 2.7 days, with typically accumulated 1.73" (44mm) of snow.

What is the ocean temperature in January in Mukilteo?

In Mukilteo, the average seawater temperature in January is 45.5°F (7.5°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the average length of the day in January in Mukilteo?

In January, the average day length in Mukilteo is 8h and 55min.

What time are sunrise and sunset in January in Mukilteo?

On the first day of January in Mukilteo, sunrise is at 7:58 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 5:07 pm PST.

What is the month with the least sunshine in Mukilteo?

January has the least sunshine of the year in Mukilteo, Washington, with an average of 4.4h of sunshine.

How long on average sun shines in January in Mukilteo?

The average sunshine duration in January is 4.4h.

What are the months with the lowest UV index in Mukilteo?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

How high is the UV index in January in Mukilteo?

The average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Mukilteo, WA

Average temperature in January - Mukilteo, WA
  • Average high temperature in January: 45°F

The warmest month (with the highest average high temperature) is August (72.7°F).
The month with the lowest average high temperature is December (42.6°F).

  • Average low temperature in January: 36.7°F

The month with the highest average low temperature is August (54°F).
The coldest month (with the lowest average low temperature) is December (35.4°F).

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Average pressure in January
Mukilteo, WA

Average pressure in January - Mukilteo, WA
  • Average pressure in January: 30.09"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).

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Average wind speed in January
Mukilteo, WA

Average wind speed in January - Mukilteo, WA
  • Average wind speed in January: 6mph

The windiest month (with the highest average wind speed) is November (6.2mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).

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Average humidity in January
Mukilteo, WA

Average humidity in January - Mukilteo, WA
  • Average humidity in January: 83%

The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is July (72%).

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Average rainfall in January
Mukilteo, WA

Average rainfall in January - Mukilteo, WA
  • Average rainfall in January: 3.43"

The wettest month (with the highest rainfall) is December (3.54").
The driest month (with the least rainfall) is July (0.43").

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Average rainfall days in January
Mukilteo, WA

Average rainfall days in January - Mukilteo, WA
  • Average rainfall days in January: 18 days

The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (6.3 days).

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Average snowfall in January
Mukilteo, WA

Average snowfall in January - Mukilteo, WA
  • Average snowfall in January: 1.73"

The month with the highest snowfall is February (4.61").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in January
Mukilteo, WA

Average snowfall days in January - Mukilteo, WA
  • Average snowfall days in January: 2.7 days

The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in January
Mukilteo, WA

Average sea temperature in January - Mukilteo, WA
  • Average sea temperature in January: 45.6°F

The best month for swimming (with the highest average sea temperature) is August (53.5°F).
The coldest month (with the lowest average sea temperature) is February (45.3°F).

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Average daylight in January /
Average sunshine in January
Mukilteo, WA

Average daylight in January / Average sunshine in January - Mukilteo, WA
  • Average daylight in January: 8h and 5min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in January: 4h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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Average sunshine days in January
Mukilteo, WA

Average sunshine days in January - Mukilteo, WA
  • Average sunshine days in January: 10.6 days

The month with the most sunshine days is August (22.6 days).
The month with the least sunshine days is November (9.1 days).

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Average UV index in January
Mukilteo, WA

Average UV index in January - Mukilteo, WA
  • Average UV index in January: 2

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in January
Mukilteo, WA

Average cloud cover in January - Mukilteo, WA
  • Average cloud cover in January: 53

The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 25).

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Average visibility in January
Mukilteo, WA

Average visibility in January - Mukilteo, WA
  • Average visibility in January: 5mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

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Mukilteo, Washington, USA

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