December Weather in Deltana, United States

Last updated: June 24, 2025

In December, the average temperature in Deltana, United States hovers around -14°C (7°F). Visitors should prepare for chilly conditions, with minimums plunging as low as -37°C (-34°F) and a maximum reaching 1°C (34°F). Expect around 42 mm (1.6 in) of precipitation over approximately 10 days, accompanied by a high average humidity of 96%. Be ready for a true winter experience!

December Temperature in Deltana

In December in Deltana, the average temperature is -14°C (7°F), with maximums reaching 1°C (34°F) and minimums plunging as low as -37°C (-34°F). Travelers should be prepared for extremely cold conditions and dress appropriately to enjoy their visit.

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

The chart illustrates December temperature patterns in Deltana, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Deltana, December typically has an average temperature of -14°C (7°F), with highs reaching up to 1°C (34°F) and lows dropping to around -37°C (-34°F).

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

December Precipitation in Deltana

In Deltana in December, the precipitation amount is 42 mm (1.6 in) over the course of 10 days.

December Precipitation Trends in Deltana

The chart displays monthly precipitation patterns in Deltana, 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 Deltana, December typically receives around 42 mm (1.6 inches) of precipitation spread over approximately 10 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 Deltana

In Deltana 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 Deltana

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

In Deltana 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 Deltana.

Maximum UV Index Levels in Deltana for December

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

Data source: Deltana 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 Deltana Compares to Other Months

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

This table compares monthly weather conditions in Deltana, 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)	20 mm (0.8 inches)	95%	low
February Weather	-17°C (3°F)	24 mm (0.9 inches)	93%	low
March Weather	-12°C (10°F)	27 mm (1.1 inches)	93%	moderate
April Weather	-3°C (27°F)	29 mm (1.1 inches)	91%	moderate
May Weather	6°C (42°F)	64 mm (2.5 inches)	87%	high
June Weather	11°C (53°F)	105 mm (4.1 inches)	86%	high
July Weather	13°C (56°F)	85 mm (3.4 inches)	93%	high
August Weather	10°C (51°F)	125 mm (4.9 inches)	94%	high
September Weather	5°C (41°F)	62 mm (2.4 inches)	94%	moderate
October Weather	-4°C (26°F)	61 mm (2.4 inches)	97%	low
November Weather	-14°C (7°F)	42 mm (1.7 inches)	99%	low
December Weather	-14°C (7°F)	42 mm (1.6 inches)	96%	low