December Weather in Elgin, United States

Last updated: June 24, 2025

In Elgin, United States, the average temperature in December hovers around -1°C (30°F). Expect lows that can plunge to -23°C (-9°F) and highs reaching up to 15°C (60°F). The region experiences considerable precipitation, totaling 111 mm (4.4 in) over approximately 17 days, with an average humidity level of 87%. Prepare for a chilly, damp month!

December Temperature in Elgin

In December in Elgin, the average temperature is -1°C (30°F), with a maximum that can reach 15°C (60°F) and a minimum that can drop as low as -23°C (-9°F). Be prepared for a wide range of temperatures when traveling to Elgin during this month.

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

The chart illustrates December temperature patterns in Elgin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Elgin, December typically has an average temperature of -1°C (30°F), with highs reaching up to 15°C (60°F) and lows dropping to around -23°C (-9°F).

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

December Precipitation in Elgin

In Elgin in December, the precipitation amount is 111 mm (4.4 in) spread over 17 days.

December Precipitation Trends in Elgin

The chart displays monthly precipitation patterns in Elgin, 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 Elgin, December typically receives around 111 mm (4.4 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 Elgin

In Elgin in December, humidity is 87%. With an average temperature of -1°C (30°F), this humidity feels like a biting chill that penetrates through layers of clothing, making travel uncomfortable as the dampness clings to your skin, intensifying the cold and causing every gust of wind to feel even more frigid.

December Average Humidity in Elgin

This chart illustrates the average monthly humidity levels in Elgin, 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 Elgin is approximately 87%, 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 Elgin

In Elgin 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 Elgin, you can visit Hourly UV Index in Elgin.

Maximum UV Index Levels in Elgin for December

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

Data source: Elgin 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 Elgin Compares to Other Months

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

This table compares monthly weather conditions in Elgin, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	93 mm (3.7 inches)	86%	moderate
February Weather	-2°C (29°F)	144 mm (5.7 inches)	86%	moderate
March Weather	2°C (36°F)	97 mm (3.8 inches)	85%	high
April Weather	6°C (43°F)	95 mm (3.8 inches)	83%	very high
May Weather	11°C (51°F)	72 mm (2.8 inches)	77%	very high
June Weather	15°C (59°F)	44 mm (1.7 inches)	81%	very high
July Weather	20°C (69°F)	3 mm (0.1 inches)	76%	very high
August Weather	20°C (68°F)	16 mm (0.6 inches)	60%	very high
September Weather	14°C (58°F)	39 mm (1.5 inches)	58%	very high
October Weather	7°C (45°F)	73 mm (2.9 inches)	75%	moderate
November Weather	2°C (36°F)	93 mm (3.7 inches)	85%	moderate
December Weather	-1°C (30°F)	111 mm (4.4 inches)	87%	low