Last updated: June 24, 2025
In December, the average temperature in Sedan, United States hovers around 5°C (41°F), with fluctuations that can dip to a chilly -13°C (9°F) at the lowest and soar to a pleasant 25°C (77°F) at the highest. Expect about 32 mm (1.2 in) of precipitation over approximately 3 days, contributing to an average humidity level of 85%. Weather in this region can be quite varied, so come prepared!
In December in Sedan, the average temperature is 5°C (41°F). The maximum can reach 25°C (77°F), while the minimum can drop to as low as -13°C (9°F). This range of temperatures makes Sedan an interesting destination for travelers seeking a mix of cool and mild weather.
In Sedan in December, the precipitation amount is 32 mm (1.2 in) over the course of 3 days.
In Sedan in December, humidity is 85%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration a challenge as the cold air clings to your skin.
In Sedan 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 Sedan, you can check the information here.
UV Risk Categories
Weather in Sedan varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sedan, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (35°F) | 56 mm (2.2 inches) | 77% | moderate |
| February Weather | 3°C (37°F) | 48 mm (1.9 inches) | 76% | high |
| March Weather | 10°C (50°F) | 99 mm (3.9 inches) | 71% | high |
| April Weather | 14°C (57°F) | 101 mm (4.0 inches) | 73% | very high |
| May Weather | 20°C (67°F) | 215 mm (8.5 inches) | 83% | very high |
| June Weather | 25°C (78°F) | 102 mm (4.0 inches) | 83% | extreme |
| July Weather | 27°C (81°F) | 87 mm (3.4 inches) | 81% | extreme |
| August Weather | 26°C (79°F) | 91 mm (3.6 inches) | 73% | very high |
| September Weather | 23°C (74°F) | 84 mm (3.3 inches) | 67% | very high |
| October Weather | 15°C (59°F) | 141 mm (5.5 inches) | 72% | high |
| November Weather | 8°C (47°F) | 32 mm (1.2 inches) | 82% | moderate |
| December Weather | 5°C (41°F) | 32 mm (1.2 inches) | 85% | moderate |