December Weather in Erma, United States

Last updated: June 24, 2025

In December, the average temperature in Erma, United States hovers around 6°C (44°F). Expect a chill with minimums dipping as low as -7°C (20°F) and maximums peaking at 17°C (64°F). This month sees 118 mm (4.6 in) of precipitation over approximately 11 days, creating a humid atmosphere with an average humidity of 84%.

December Temperature in Erma

In December in Erma, the average temperature is 6°C (44°F). Maximums can reach 17°C (64°F), while minimums can drop to as low as -7°C (20°F). Be prepared for a mix of chilly and mild weather, making it a great time to explore the local sights while layering up for warmth.

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

The chart illustrates December temperature patterns in Erma, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Erma, December typically has an average temperature of 6°C (44°F), with highs reaching up to 17°C (64°F) and lows dropping to around -7°C (20°F).

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

December Precipitation in Erma

In Erma in December, the precipitation amount is 118 mm (4.6 in) over the course of 11 days.

December Precipitation Trends in Erma

The chart displays monthly precipitation patterns in Erma, 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 Erma, December typically receives around 118 mm (4.6 inches) of precipitation spread over approximately 11 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 Erma

In Erma in December humidity is 84%. With an average temperature of 6°C (44°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor activities less comfortable and necessitating layered clothing to stay warm and dry while exploring the area.

December Average Humidity in Erma

This chart illustrates the average monthly humidity levels in Erma, 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 Erma is approximately 84%, 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 Erma

In Erma in December, 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 Erma, you can check the information here.

Maximum UV Index Levels in Erma for December

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

Data source: Erma 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 Erma Compares to Other Months

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

This table compares monthly weather conditions in Erma, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	74 mm (2.9 inches)	84%	moderate
February Weather	5°C (40°F)	113 mm (4.4 inches)	83%	moderate
March Weather	7°C (44°F)	111 mm (4.4 inches)	83%	high
April Weather	11°C (53°F)	94 mm (3.7 inches)	81%	very high
May Weather	16°C (61°F)	125 mm (4.9 inches)	78%	very high
June Weather	22°C (71°F)	77 mm (3.0 inches)	79%	very high
July Weather	25°C (78°F)	129 mm (5.1 inches)	74%	very high
August Weather	25°C (77°F)	115 mm (4.5 inches)	72%	very high
September Weather	22°C (72°F)	107 mm (4.2 inches)	75%	very high
October Weather	18°C (64°F)	142 mm (5.6 inches)	81%	high
November Weather	10°C (51°F)	90 mm (3.5 inches)	85%	moderate
December Weather	6°C (44°F)	118 mm (4.6 inches)	84%	moderate