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December Weather in Columbia, United States

Last updated: June 24, 2025

In December, the average temperature in Columbia, United States hovers around 7°C (44°F). Expect chilly nights, with minimum temperatures plunging to -10°C (14°F), while sunny days might reach a pleasant 21°C (71°F). During this month, 146 mm (5.7 in) of precipitation typically falls over approximately 11 days, contributing to an average humidity level of 88%. Stay prepared for the wet and cool conditions!

December Temperature in Columbia

In December in Columbia, the average temperature is 7°C (44°F), with maximums often reaching 21°C (71°F) and minimums dipping as low as -10°C (14°F). Be prepared for a wide range of temperatures when traveling to Columbia during this month.

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

The chart illustrates December temperature patterns in Columbia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Columbia, December typically has an average temperature of 7°C (44°F), with highs reaching up to 21°C (71°F) and lows dropping to around -10°C (14°F).
JanFebMarAprMayJunJulAugSepOctNovDec394450576875797773624844
Data source: Temperature data for Columbia 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 Columbia

In Columbia in December, the precipitation amount is 146 mm (5.7 in) spread over 11 days.

December Precipitation Trends in Columbia

The chart displays monthly precipitation patterns in Columbia, 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 Columbia, December typically receives around 146 mm (5.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec10018914814512816211111412112584146
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Columbia

In Columbia in December, humidity is 88%. With an average temperature of 7°C (44°F), this humidity feels like an unwelcoming chill that clings to your skin, making outdoor exploration uncomfortable and prompting frequent breaks in sheltered areas.

December Average Humidity in Columbia

This chart illustrates the average monthly humidity levels in Columbia, 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 Columbia is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%82%83%83%80%74%71%78%88%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Columbia

In Columbia 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 Columbia, you can check the information here.

Maximum UV Index Levels in Columbia for December

The chart shows the monthly maximum UV Index (UVI) for Columbia 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 Columbia typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3679101111109753
Data source: Columbia 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 Columbia Compares to Other Months

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

This table compares monthly weather conditions in Columbia, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)100 mm (3.9 inches)87%moderate
February Weather6°C (44°F)189 mm (7.4 inches)86%high
March Weather10°C (51°F)148 mm (5.8 inches)86%high
April Weather14°C (58°F)145 mm (5.7 inches)82%very high
May Weather20°C (69°F)128 mm (5.0 inches)82%very high
June Weather24°C (75°F)162 mm (6.4 inches)83%extreme
July Weather26°C (79°F)111 mm (4.4 inches)80%extreme
August Weather25°C (77°F)114 mm (4.5 inches)74%very high
September Weather23°C (73°F)121 mm (4.8 inches)71%very high
October Weather17°C (63°F)125 mm (4.9 inches)78%high
November Weather9°C (48°F)84 mm (3.3 inches)88%moderate
December Weather7°C (44°F)146 mm (5.7 inches)88%moderate

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