December Weather in South Bend, United States

Last updated: June 24, 2025

In December, the average temperature in South Bend, United States hovers around 1°C (34°F). Expect minimums dropping to -21°C (-6°F) and maximums peaking at 17°C (63°F). With an average precipitation of 62 mm (2.5 in) over 10 days, it's wise to prepare for the occasional shower. Don't forget, the average humidity sits at a chilly 86%!

December Temperature in South Bend

In December in South Bend, the average temperature is 1°C (34°F). The maximum can reach 17°C (63°F) and the minimum can be as low as -21°C (-6°F). Be prepared for a wide temperature range when traveling, so pack accordingly!

December Weather in South Bend: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in South Bend, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South Bend, December typically has an average temperature of 1°C (34°F), with highs reaching up to 17°C (63°F) and lows dropping to around -21°C (-6°F).

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

December Precipitation in South Bend

In South Bend in December, the total precipitation amount is 62 mm (2.5 in) over the course of 10 days.

December Precipitation Trends in South Bend

The chart displays monthly precipitation patterns in South Bend, 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 South Bend, December typically receives around 62 mm (2.5 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 South Bend

In South Bend in December, humidity is 86%. With an average temperature of 1°C (34°F), this humidity feels like a chilling embrace, making outdoor adventures brisk and invigorating but challenging for travel.

December Average Humidity in South Bend

This chart illustrates the average monthly humidity levels in South Bend, 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 South Bend is approximately 86%, 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 South Bend

In South Bend 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 South Bend, you can check the information here.

Maximum UV Index Levels in South Bend for December

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

Data source: South Bend 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 South Bend Compares to Other Months

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

This table compares monthly weather conditions in South Bend, 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 (28°F)	73 mm (2.9 inches)	85%	moderate
February Weather	-2°C (29°F)	75 mm (2.9 inches)	85%	moderate
March Weather	4°C (39°F)	97 mm (3.8 inches)	86%	high
April Weather	9°C (48°F)	106 mm (4.2 inches)	87%	very high
May Weather	16°C (61°F)	161 mm (6.3 inches)	81%	very high
June Weather	22°C (72°F)	139 mm (5.5 inches)	82%	very high
July Weather	24°C (75°F)	117 mm (4.6 inches)	81%	very high
August Weather	22°C (73°F)	109 mm (4.3 inches)	79%	very high
September Weather	19°C (67°F)	79 mm (3.1 inches)	78%	very high
October Weather	13°C (55°F)	136 mm (5.4 inches)	81%	high
November Weather	4°C (40°F)	74 mm (2.9 inches)	89%	moderate
December Weather	1°C (34°F)	62 mm (2.5 inches)	86%	moderate