December Weather in Karlstad, United States

Last updated: June 24, 2025

In December, the average temperature in Karlstad, United States hovers around -10°C (15°F). Expect chilly extremes, with minimums plummeting to -34°C (-29°F) and occasional highs reaching up to 7°C (44°F). This month also brings about 33 mm (1.3 in) of precipitation over 7 days, contributing to an average humidity of a brisk 93%. Stay warm and prepared!

December Temperature in Karlstad

In December in Karlstad, the average temperature is -10°C (15°F), with maximums reaching 7°C (44°F) and minimums plunging as low as -34°C (-29°F). Travelers should be prepared for extremely cold weather and pack accordingly to ensure a comfortable visit.

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

The chart illustrates December temperature patterns in Karlstad, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Karlstad, December typically has an average temperature of -10°C (15°F), with highs reaching up to 7°C (44°F) and lows dropping to around -34°C (-29°F).

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

December Precipitation in Karlstad

In Karlstad in December, the precipitation amount is 33 mm (1.3 in) over a period of 7 days.

December Precipitation Trends in Karlstad

The chart displays monthly precipitation patterns in Karlstad, 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 Karlstad, December typically receives around 33 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 Karlstad

In Karlstad in December humidity is 93%. With an average temperature of -10°C (15°F), this humidity feels like an eerie chill that penetrates even the warmest clothing, making outdoor activities uncomfortable and travel quite challenging.

December Average Humidity in Karlstad

This chart illustrates the average monthly humidity levels in Karlstad, 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 Karlstad is approximately 93%, 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 Karlstad

In Karlstad in December, 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 Karlstad, you can visit Hourly UV Index in Karlstad.

Maximum UV Index Levels in Karlstad for December

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

Data source: Karlstad 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 Karlstad Compares to Other Months

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

This table compares monthly weather conditions in Karlstad, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-14°C (8°F)	18 mm (0.7 inches)	94%	low
February Weather	-15°C (6°F)	20 mm (0.8 inches)	91%	moderate
March Weather	-4°C (25°F)	24 mm (0.9 inches)	90%	moderate
April Weather	3°C (38°F)	34 mm (1.3 inches)	81%	high
May Weather	12°C (55°F)	54 mm (2.1 inches)	74%	very high
June Weather	19°C (67°F)	88 mm (3.5 inches)	75%	very high
July Weather	21°C (71°F)	75 mm (2.9 inches)	74%	very high
August Weather	19°C (67°F)	73 mm (2.9 inches)	77%	very high
September Weather	14°C (58°F)	76 mm (3.0 inches)	75%	high
October Weather	6°C (42°F)	83 mm (3.3 inches)	78%	moderate
November Weather	-4°C (25°F)	29 mm (1.1 inches)	87%	low
December Weather	-10°C (15°F)	33 mm (1.3 inches)	93%	low