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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 12°C (54°F), with a notable range from a chilly -4°C (26°F) to a warm 27°C (82°F). Expect 145 mm (5.7 in) of precipitation spread over approximately 12 days, contributing to the region's high average humidity of 87%.

December Temperature in Columbia

In December, in Columbia, the average temperature is 12°C (54°F). The maximum can reach 27°C (82°F), and the minimum can be as low as -4°C (26°F). This makes Columbia an ideal destination for travelers seeking to experience a range of temperatures and activities, from enjoying warm daytime excursions to bundling up for cool evenings.

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 12°C (54°F), with highs reaching up to 27°C (82°F) and lows dropping to around -4°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec505662667579818078715754
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 145 mm (5.7 in) over the course of 12 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 145 mm (5.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec11812010713915416514718611010286146
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 87%. With an average temperature of 12°C (54°F), this humidity feels like a damp embrace, making it quite uncomfortable for traveling, as the air feels heavy and can quickly sap your energy as you explore the sights.

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 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%78%73%71%79%78%80%76%83%87%
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.
JanFebMarAprMayJunJulAugSepOctNovDec589111112111110864
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 Weather10°C (51°F)118 mm (4.6 inches)82%moderate
February Weather13°C (56°F)120 mm (4.7 inches)80%very high
March Weather17°C (63°F)107 mm (4.2 inches)80%very high
April Weather19°C (66°F)139 mm (5.5 inches)78%extreme
May Weather24°C (75°F)154 mm (6.1 inches)73%extreme
June Weather26°C (80°F)165 mm (6.5 inches)71%extreme
July Weather27°C (81°F)147 mm (5.8 inches)79%extreme
August Weather27°C (81°F)186 mm (7.3 inches)78%extreme
September Weather26°C (79°F)110 mm (4.3 inches)80%very high
October Weather22°C (71°F)102 mm (4.0 inches)76%very high
November Weather14°C (58°F)86 mm (3.4 inches)83%high
December Weather12°C (54°F)145 mm (5.7 inches)87%moderate

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