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December Weather in Columbia, United States

Last updated: June 24, 2025

In December, the average temperature in Columbia, United States is a brisk 3°C (38°F). Expect a wide range of temperatures, with the minimum dipping down to -17°C (1°F) and the maximum reaching a pleasant 24°C (75°F). During this time, the region experiences an average precipitation of 42 mm (1.6 in) over 6 days, coupled with a high average humidity of 86%. Be prepared for a mix of chilly days and milder moments!

December Temperature in Columbia

In December in Columbia, the average temperature is 3°C (38°F). The maximum can reach 24°C (75°F), while the minimum can plummet to as low as -17°C (1°F). Be prepared for a wide range of temperatures when planning your travels.

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 3°C (38°F), with highs reaching up to 24°C (75°F) and lows dropping to around -17°C (1°F).
JanFebMarAprMayJunJulAugSepOctNovDec313446546676797672574438
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 total precipitation amount is 42 mm (1.6 in) over a span of 6 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 42 mm (1.6 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec6961123125181117100116591105842
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 86%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps through your layers, making traveling uncomfortable as breath clouds visibly in the crisp air.

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 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%80%82%83%81%80%76%76%85%86%
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.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109643
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 Weather0°C (32°F)69 mm (2.7 inches)82%moderate
February Weather1°C (34°F)61 mm (2.4 inches)80%moderate
March Weather8°C (46°F)123 mm (4.8 inches)80%high
April Weather12°C (54°F)125 mm (4.9 inches)80%very high
May Weather19°C (66°F)181 mm (7.1 inches)82%very high
June Weather24°C (76°F)117 mm (4.6 inches)83%extreme
July Weather26°C (80°F)100 mm (4.0 inches)81%extreme
August Weather24°C (76°F)116 mm (4.6 inches)80%very high
September Weather22°C (72°F)59 mm (2.3 inches)76%very high
October Weather14°C (58°F)109 mm (4.3 inches)76%high
November Weather7°C (44°F)58 mm (2.3 inches)85%moderate
December Weather3°C (38°F)42 mm (1.6 inches)86%moderate

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