January Weather in Sequim, United States

Last updated: June 24, 2025

In January, the average temperature in Sequim, United States hovers around 3°C (38°F), with a minimum of -8°C (18°F) and a maximum of 12°C (53°F). Expect 182 mm (7.2 in) of precipitation spread over approximately 17 days, contributing to the region's average humidity of a moist 86%.

January Temperature in Sequim

In January in Sequim, the average temperature is 3°C (38°F), with maximums reaching up to 12°C (53°F) and minimums dropping as low as -8°C (18°F). It's advisable to pack warm clothing and prepare for chilly weather if you're planning to travel during this time.

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

The chart illustrates January temperature patterns in Sequim, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sequim, January typically has an average temperature of 3°C (38°F), with highs reaching up to 12°C (53°F) and lows dropping to around -8°C (18°F).

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

January Precipitation in Sequim

In Sequim in January, the total precipitation amount is 182 mm (7.2 in) over the course of 17 days.

January Precipitation Trends in Sequim

The chart displays monthly precipitation patterns in Sequim, 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 Sequim, January typically receives around 182 mm (7.2 inches) of precipitation spread over approximately 17 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 Sequim

In Sequim in January humidity is 86%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps through your layers, making traveling uncomfortable as breath clouds visibly in the crisp air.

January Average Humidity in Sequim

This chart illustrates the average monthly humidity levels in Sequim, 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 Sequim 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 Sequim

In Sequim 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 Sequim, you can visit Hourly UV Index in Sequim.

Maximum UV Index Levels in Sequim for January

The chart shows the monthly maximum UV Index (UVI) for Sequim 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 Sequim typically reaches 2, which falls under the low exposure category.

Data source: Sequim 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 Sequim Compares to Other Months

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

This table compares monthly weather conditions in Sequim, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	182 mm (7.2 inches)	86%	low
February Weather	2°C (36°F)	150 mm (5.9 inches)	84%	moderate
March Weather	4°C (40°F)	128 mm (5.1 inches)	85%	moderate
April Weather	7°C (44°F)	119 mm (4.7 inches)	83%	high
May Weather	11°C (51°F)	93 mm (3.7 inches)	84%	very high
June Weather	13°C (56°F)	118 mm (4.6 inches)	84%	very high
July Weather	15°C (60°F)	49 mm (1.9 inches)	82%	very high
August Weather	16°C (61°F)	45 mm (1.8 inches)	73%	very high
September Weather	13°C (56°F)	122 mm (4.8 inches)	74%	high
October Weather	9°C (48°F)	143 mm (5.6 inches)	83%	moderate
November Weather	6°C (42°F)	199 mm (7.8 inches)	86%	moderate
December Weather	3°C (38°F)	193 mm (7.6 inches)	87%	low