December Weather in Delta Junction, United States

Last updated: June 24, 2025

In December, the average temperature in Delta Junction, United States hovers around -14°C (7°F). However, temperatures can plummet to a chilling -37°C (-34°F) or reach a mild 3°C (38°F). Expect about 34 mm (1.3 in) of precipitation spread over 7 days, with a staggering average humidity of 96%! ❄️

December Temperature in Delta Junction

In December in Delta Junction, the average temperature is -14°C (7°F), with maximums reaching 3°C (38°F) and minimums plummeting to as low as -37°C (-34°F). Travelers should be well-prepared for extreme cold during this time.

December Weather in Delta Junction: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Delta Junction, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Delta Junction, December typically has an average temperature of -14°C (7°F), with highs reaching up to 3°C (38°F) and lows dropping to around -37°C (-34°F).

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

December Precipitation in Delta Junction

In Delta Junction in December, the total precipitation amount is 34 mm (1.3 in) over the course of 7 days.

December Precipitation Trends in Delta Junction

The chart displays monthly precipitation patterns in Delta Junction, 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 Delta Junction, December typically receives around 34 mm (1.3 inches) of precipitation spread over approximately 7 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 Delta Junction

In Delta Junction in December humidity is 96%. With an average temperature of -14°C (7°F), this humidity feels like an icy fog enveloping you, making every breath feel heavy and biting, which can be invigorating yet challenging for traveling.

December Average Humidity in Delta Junction

This chart illustrates the average monthly humidity levels in Delta Junction, 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 Delta Junction is approximately 96%, 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 Delta Junction

In Delta Junction 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 Delta Junction.

Maximum UV Index Levels in Delta Junction for December

The chart shows the monthly maximum UV Index (UVI) for Delta Junction 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 Delta Junction typically reaches 1, which falls under the low exposure category.

Data source: Delta Junction 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 Delta Junction Compares to Other Months

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

This table compares monthly weather conditions in Delta Junction, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-18°C (0°F)	14 mm (0.6 inches)	95%	low
February Weather	-16°C (4°F)	20 mm (0.8 inches)	93%	low
March Weather	-10°C (14°F)	24 mm (0.9 inches)	93%	low
April Weather	0°C (33°F)	24 mm (1.0 inches)	91%	moderate
May Weather	10°C (50°F)	44 mm (1.7 inches)	87%	moderate
June Weather	15°C (59°F)	80 mm (3.2 inches)	86%	moderate
July Weather	17°C (62°F)	84 mm (3.3 inches)	93%	high
August Weather	13°C (56°F)	127 mm (5.0 inches)	94%	moderate
September Weather	8°C (46°F)	62 mm (2.5 inches)	94%	moderate
October Weather	-1°C (30°F)	48 mm (1.9 inches)	97%	low
November Weather	-13°C (9°F)	33 mm (1.3 inches)	99%	low
December Weather	-14°C (7°F)	34 mm (1.3 inches)	96%	low