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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 8°C (46°F). While you may experience a minimum chill of -9°C (15°F), the mercury can rise to a comfortable 23°C (74°F). Expect 149 mm (5.9 in) of precipitation spread over about 10 days, contributing to an average humidity level of 88%. Stay prepared for a mix of cool breezes and occasional rain!

December Temperature in Columbia

In December in Columbia, the average temperature is 8°C (46°F), with maximums reaching 23°C (74°F) and minimums dipping as low as -9°C (15°F). This varied climate makes it essential to pack layers for your travels 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 8°C (46°F), with highs reaching up to 23°C (74°F) and lows dropping to around -9°C (15°F).
JanFebMarAprMayJunJulAugSepOctNovDec414654597076797874634946
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 149 mm (5.9 in) spread over 10 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 149 mm (5.9 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec11317917215411112612811911011877150
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 8°C (46°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration feel much more uncomfortable than the temperature alone would suggest.

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%87%85%82%83%82%78%67%64%75%87%89%
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.
JanFebMarAprMayJunJulAugSepOctNovDec46710101111109753
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 Weather5°C (42°F)112 mm (4.4 inches)87%moderate
February Weather8°C (46°F)179 mm (7.0 inches)87%high
March Weather12°C (54°F)172 mm (6.8 inches)85%high
April Weather15°C (60°F)154 mm (6.1 inches)82%very high
May Weather21°C (70°F)111 mm (4.4 inches)83%very high
June Weather25°C (77°F)126 mm (5.0 inches)82%extreme
July Weather26°C (80°F)128 mm (5.0 inches)78%extreme
August Weather26°C (78°F)119 mm (4.7 inches)67%very high
September Weather23°C (74°F)110 mm (4.3 inches)64%very high
October Weather17°C (64°F)118 mm (4.6 inches)74%high
November Weather9°C (49°F)77 mm (3.0 inches)87%moderate
December Weather8°C (46°F)149 mm (5.9 inches)88%moderate

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