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December Weather in South Bend, United States

Last updated: June 24, 2025

In December, the average temperature in South Bend, United States hovers around 6°C (43°F), with lows dipping to a chilly -5°C (24°F) and highs reaching a mild 13°C (56°F). Expect quite a bit of rain, with 216 mm (8.5 in) of precipitation spread over 19 days. The air will feel quite humid, averaging around 87%, so be prepared for a damp atmosphere!

December Temperature in South Bend

In December in South Bend, the average temperature is 6°C (43°F), with maximums reaching 13°C (56°F) and minimums dropping as low as -5°C (24°F). Be prepared for cool weather and pack accordingly to ensure a comfortable trip.

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 6°C (43°F), with highs reaching up to 13°C (56°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec434145495459616360514742
Data source: Temperature data for South Bend generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in South Bend

In South Bend in December, the precipitation amount is 216 mm (8.5 in) during a total of 19 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 216 mm (8.5 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec2271731541326957131199152230216
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in South Bend

In South Bend in December, humidity is 87%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities uncomfortable and necessitating warm, breathable layers for traveling.

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 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%85%83%84%84%82%73%74%83%86%87%
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 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 South Bend, you can visit Hourly UV Index in South Bend.

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 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235699987532
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.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)227 mm (8.9 inches)86%low
February Weather5°C (42°F)173 mm (6.8 inches)84%moderate
March Weather7°C (45°F)154 mm (6.0 inches)85%moderate
April Weather10°C (49°F)132 mm (5.2 inches)83%high
May Weather12°C (54°F)69 mm (2.7 inches)84%very high
June Weather15°C (59°F)57 mm (2.2 inches)84%very high
July Weather16°C (61°F)13 mm (0.5 inches)82%very high
August Weather17°C (63°F)11 mm (0.4 inches)73%very high
September Weather15°C (60°F)99 mm (3.9 inches)74%high
October Weather11°C (52°F)152 mm (6.0 inches)83%moderate
November Weather8°C (47°F)230 mm (9.1 inches)86%moderate
December Weather6°C (43°F)216 mm (8.5 inches)87%low

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