December Weather in Nikiski, United States

Last updated: June 24, 2025

In December, the average temperature in Nikiski, United States hovers around -2°C (29°F). Expect a chilly range where the minimum can drop to -14°C (7°F), while the maximum reaches 6°C (42°F). During this time, precipitation is significant, averaging 109 mm (4.3 in) over 17 days, accompanied by a high average humidity of 98%.

December Temperature in Nikiski

In December in Nikiski, the average temperature is -2°C (29°F). The maximum can reach 6°C (42°F), while the minimum can drop as low as -14°C (7°F). Travelers should be prepared for cold conditions and dress warmly to fully enjoy their visit.

December Weather in Nikiski: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Nikiski, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nikiski, December typically has an average temperature of -2°C (29°F), with highs reaching up to 6°C (42°F) and lows dropping to around -14°C (7°F).

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

December Precipitation in Nikiski

In Nikiski in December, the precipitation amount is 109 mm (4.3 in), occurring over the course of 17 days.

December Precipitation Trends in Nikiski

The chart displays monthly precipitation patterns in Nikiski, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Nikiski, December typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 17 days.

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

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Millimeters (mm) Inches (in)

December Humidity in Nikiski

In Nikiski in December, humidity is 98%. With an average temperature of -2°C (29°F), this humidity feels like an icy blanket clinging to the skin, making it challenging to stay warm while traveling.

December Average Humidity in Nikiski

This chart illustrates the average monthly humidity levels in Nikiski, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Nikiski is approximately 98%, offering insight into how humid the weather typically is during this month.

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

December UV Index in Nikiski

In Nikiski in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Nikiski.

Maximum UV Index Levels in Nikiski for December

The chart shows the monthly maximum UV Index (UVI) for Nikiski in December, 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 December, the maximum UV index in Nikiski typically reaches 1, which falls under the low exposure category.

Data source: Nikiski December 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 December Weather in Nikiski Compares to Other Months

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

This table compares monthly weather conditions in Nikiski, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	53 mm (2.1 inches)	95%	low
February Weather	-3°C (27°F)	59 mm (2.3 inches)	95%	low
March Weather	-2°C (29°F)	41 mm (1.6 inches)	90%	low
April Weather	2°C (36°F)	39 mm (1.6 inches)	82%	moderate
May Weather	7°C (44°F)	63 mm (2.5 inches)	85%	moderate
June Weather	11°C (52°F)	43 mm (1.7 inches)	95%	high
July Weather	14°C (57°F)	77 mm (3.0 inches)	100%	high
August Weather	14°C (58°F)	97 mm (3.8 inches)	99%	moderate
September Weather	11°C (53°F)	137 mm (5.4 inches)	97%	moderate
October Weather	6°C (44°F)	150 mm (5.9 inches)	93%	low
November Weather	0°C (32°F)	101 mm (4.0 inches)	97%	low
December Weather	-2°C (29°F)	109 mm (4.3 inches)	98%	low