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December Weather in Columbia, United States

Last updated: June 24, 2025

In Columbia, United States, the average temperature for December hovers around 13°C (55°F). However, be prepared for fluctuations, as temperatures can dip to a chilly -4°C (25°F) or soar to a warm 27°C (81°F). During this month, you can expect approximately 127 mm (5.0 in) of precipitation spread over 11 days, making for a rather humid atmosphere with an average humidity level of 86%.

December Temperature in Columbia

In December in Columbia, the average temperature is 13°C (55°F). The maximum can reach 27°C (81°F) and the minimum can be as low as -4°C (25°F). This variation in temperatures makes it essential for travelers to pack layers to comfortably adapt to changing conditions.

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 13°C (55°F), with highs reaching up to 27°C (81°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec525862677580828279725955
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 127 mm (5.0 in), occurring 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 127 mm (5.0 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec9011278112981111111281158947127
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 13°C (55°F), this humidity feels like a damp blanket clinging to your skin, making travel quite uncomfortable and urging you to seek cooler, dryer spots.

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.
JanFebMarAprMayJunJulAugSepOctNovDec83%82%79%77%74%70%78%78%79%74%83%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 reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Columbia for better planning.

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 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111111121110864
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 Weather11°C (52°F)90 mm (3.6 inches)83%moderate
February Weather15°C (58°F)112 mm (4.4 inches)82%very high
March Weather17°C (62°F)78 mm (3.1 inches)79%very high
April Weather19°C (67°F)112 mm (4.4 inches)77%extreme
May Weather24°C (75°F)98 mm (3.9 inches)74%extreme
June Weather26°C (80°F)111 mm (4.4 inches)70%extreme
July Weather28°C (82°F)111 mm (4.4 inches)78%extreme
August Weather28°C (82°F)128 mm (5.1 inches)78%extreme
September Weather26°C (80°F)115 mm (4.5 inches)79%very high
October Weather22°C (73°F)89 mm (3.5 inches)74%very high
November Weather15°C (59°F)47 mm (1.9 inches)83%high
December Weather13°C (55°F)127 mm (5.0 inches)86%moderate

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