January Weather in Mukilteo, United States

Last updated: June 24, 2025

In January, the average temperature in Mukilteo, United States hovers around 5°C (42°F). Expect chilly days with minimums dropping to -7°C (20°F), while highs can reach up to 15°C (58°F). This month brings 219 mm (8.6 in) of precipitation over about 16 days, contributing to an average humidity of 86%.

January Temperature in Mukilteo

In January in Mukilteo, the average temperature is 5°C (42°F). Maximums can reach 15°C (58°F), while minimums can dip as low as -7°C (20°F). Travelers should be prepared for chilly conditions and pack accordingly to enjoy their time in this location.

January Weather in Mukilteo: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Mukilteo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mukilteo, January typically has an average temperature of 5°C (42°F), with highs reaching up to 15°C (58°F) and lows dropping to around -7°C (20°F).

Data source: Temperature data for Mukilteo generated using information from the Copernicus Climate Change Service.

January Precipitation in Mukilteo

In Mukilteo in January, the precipitation amount is 219 mm (8.6 in) spread over 16 days.

January Precipitation Trends in Mukilteo

The chart displays monthly precipitation patterns in Mukilteo, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Mukilteo, January typically receives around 219 mm (8.6 inches) of precipitation spread over approximately 16 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Mukilteo

In Mukilteo in January, humidity is 86%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that penetrates your layers, making outdoor activities quite uncomfortable and prompting you to seek warmth indoors more often.

January Average Humidity in Mukilteo

This chart illustrates the average monthly humidity levels in Mukilteo, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Mukilteo is approximately 86%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Mukilteo

In Mukilteo in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Mukilteo, you can visit Hourly UV Index in Mukilteo.

Maximum UV Index Levels in Mukilteo for January

The chart shows the monthly maximum UV Index (UVI) for Mukilteo in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Mukilteo typically reaches 2, which falls under the low exposure category.

Data source: Mukilteo January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Mukilteo Compares to Other Months

Weather in Mukilteo varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Mukilteo, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Mukilteo, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (42°F)	219 mm (8.6 inches)	86%	low
February Weather	4°C (40°F)	209 mm (8.2 inches)	86%	moderate
March Weather	7°C (44°F)	165 mm (6.5 inches)	87%	moderate
April Weather	9°C (49°F)	138 mm (5.4 inches)	84%	high
May Weather	13°C (55°F)	87 mm (3.4 inches)	81%	very high
June Weather	15°C (60°F)	81 mm (3.2 inches)	82%	very high
July Weather	17°C (64°F)	31 mm (1.2 inches)	79%	very high
August Weather	18°C (65°F)	33 mm (1.3 inches)	63%	very high
September Weather	15°C (60°F)	114 mm (4.5 inches)	62%	high
October Weather	11°C (51°F)	196 mm (7.7 inches)	83%	moderate
November Weather	8°C (46°F)	254 mm (10.0 inches)	89%	low
December Weather	5°C (42°F)	247 mm (9.7 inches)	88%	low