January Weather in McKinleyville, United States

Last updated: June 24, 2025

In January, the average temperature in McKinleyville, United States hovers around 8°C (46°F). Expect a range from a chilly -2°C (29°F) to a mild 18°C (65°F). During this month, precipitation is notable, with about 243 mm (9.6 in) over 14 days and average humidity reaching a damp 86%. Stay prepared for varying weather conditions!

January Temperature in McKinleyville

In January in McKinleyville, the average temperature is 8°C (46°F). Maximum temperatures can reach 18°C (65°F), while minimums can drop as low as -2°C (29°F). It's essential to pack layered clothing to stay comfortable during your travels.

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

The chart illustrates January temperature patterns in McKinleyville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In McKinleyville, January typically has an average temperature of 8°C (46°F), with highs reaching up to 18°C (65°F) and lows dropping to around -2°C (29°F).

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

January Precipitation in McKinleyville

In McKinleyville in January, the precipitation amount is 243 mm (9.6 in) over the course of 14 days.

January Precipitation Trends in McKinleyville

The chart displays monthly precipitation patterns in McKinleyville, 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 McKinleyville, January typically receives around 243 mm (9.6 inches) of precipitation spread over approximately 14 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 McKinleyville

In McKinleyville in January humidity is 86%. With an average temperature of 8°C (46°F), this humidity feels like a damp chill enveloping you, making outdoor activities less enjoyable and requiring extra layers to stay comfortable while exploring.

January Average Humidity in McKinleyville

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

In McKinleyville in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in McKinleyville, you can check the information here.

Maximum UV Index Levels in McKinleyville for January

The chart shows the monthly maximum UV Index (UVI) for McKinleyville 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 McKinleyville typically reaches 3, which falls under the moderate exposure category.

Data source: McKinleyville 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 McKinleyville Compares to Other Months

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

This table compares monthly weather conditions in McKinleyville, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	243 mm (9.6 inches)	86%	moderate
February Weather	7°C (45°F)	231 mm (9.1 inches)	85%	moderate
March Weather	8°C (46°F)	185 mm (7.3 inches)	85%	high
April Weather	10°C (49°F)	121 mm (4.7 inches)	82%	very high
May Weather	11°C (52°F)	66 mm (2.6 inches)	81%	very high
June Weather	14°C (57°F)	27 mm (1.1 inches)	79%	extreme
July Weather	15°C (59°F)	6 mm (0.2 inches)	70%	very high
August Weather	16°C (61°F)	5 mm (0.2 inches)	60%	very high
September Weather	15°C (59°F)	35 mm (1.4 inches)	62%	very high
October Weather	12°C (54°F)	67 mm (2.6 inches)	72%	high
November Weather	10°C (49°F)	152 mm (6.0 inches)	87%	moderate
December Weather	7°C (46°F)	184 mm (7.2 inches)	86%	low