Last updated: June 24, 2025
In Columbia, United States, the average temperature in December hovers around -6°C (21°F), with extremes reaching a chilling -31°C (-23°F) and a milder 13°C (55°F). Expect about 95 mm (3.7 in) of precipitation spread over 15 days, with an average humidity of 85%. Bundle up and stay dry!
In December in Columbia, the average temperature is -6°C (21°F). The maximum can reach 13°C (55°F), while the minimum can drop as low as -31°C (-23°F). Be prepared for significant temperature fluctuations if you plan to travel during this time.
In Columbia in December, the precipitation amount is 95 mm (3.7 in) over a period of 15 days.
In Columbia in December, humidity is 85%. With an average temperature of -6°C (21°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and forcing you to bundle up even more than usual as you navigate through frosty air.
In Columbia in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Columbia, you can visit Hourly UV Index in Columbia.
UV Risk Categories
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.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -9°C (16°F) | 89 mm (3.5 inches) | 91% | low |
| February Weather | -8°C (18°F) | 86 mm (3.4 inches) | 89% | moderate |
| March Weather | -4°C (26°F) | 78 mm (3.1 inches) | 85% | moderate |
| April Weather | 4°C (39°F) | 119 mm (4.7 inches) | 84% | very high |
| May Weather | 11°C (52°F) | 104 mm (4.1 inches) | 78% | very high |
| June Weather | 16°C (61°F) | 105 mm (4.1 inches) | 72% | very high |
| July Weather | 19°C (66°F) | 118 mm (4.6 inches) | 75% | very high |
| August Weather | 18°C (64°F) | 102 mm (4.0 inches) | 74% | very high |
| September Weather | 14°C (57°F) | 75 mm (2.9 inches) | 77% | high |
| October Weather | 7°C (46°F) | 139 mm (5.5 inches) | 85% | moderate |
| November Weather | -1°C (31°F) | 111 mm (4.4 inches) | 86% | moderate |
| December Weather | -6°C (21°F) | 95 mm (3.7 inches) | 85% | low |