Last updated: June 24, 2025
In December, the average temperature in Oak Ridge, United States hovers around 7°C (45°F). While you might experience chilly lows of -9°C (16°F), pleasant highs can reach up to 23°C (73°F). Expect approximately 141 mm (5.6 in) of precipitation over 11 days, with an average humidity of 88%, adding to the atmosphere of the season.
In December in Oak Ridge, the average temperature is 7°C (45°F), with maximums reaching 23°C (73°F) and minimums dropping as low as -9°C (16°F). Be prepared for a wide range of temperatures when traveling to Oak Ridge during this month.
In Oak Ridge in December, the total precipitation amount is 141 mm (5.6 in) spread over 11 days.
In Oak Ridge in December humidity is 88%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable as you navigate through a heavy, thick atmosphere that clings to your skin.
In Oak Ridge 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 Oak Ridge, you can check the information here.
UV Risk Categories
Weather in Oak Ridge varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Oak Ridge, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (41°F) | 104 mm (4.1 inches) | 86% | moderate |
| February Weather | 8°C (46°F) | 185 mm (7.3 inches) | 86% | high |
| March Weather | 11°C (52°F) | 162 mm (6.4 inches) | 86% | very high |
| April Weather | 15°C (59°F) | 142 mm (5.6 inches) | 82% | very high |
| May Weather | 20°C (69°F) | 117 mm (4.6 inches) | 85% | extreme |
| June Weather | 24°C (75°F) | 122 mm (4.8 inches) | 85% | extreme |
| July Weather | 26°C (79°F) | 132 mm (5.2 inches) | 83% | extreme |
| August Weather | 25°C (77°F) | 140 mm (5.5 inches) | 76% | very high |
| September Weather | 23°C (73°F) | 99 mm (3.9 inches) | 76% | very high |
| October Weather | 17°C (63°F) | 120 mm (4.7 inches) | 80% | high |
| November Weather | 9°C (49°F) | 81 mm (3.2 inches) | 88% | moderate |
| December Weather | 7°C (45°F) | 141 mm (5.6 inches) | 88% | moderate |