Last updated: June 24, 2025
In December, the average temperature in Junction, United States hovers around -4°C (25°F), making it a chilly time of year. Temperatures can drop as low as -26°C (-14°F), while occasionally peaking at a mild 13°C (56°F). Expect about 35 mm (1.4 in) of precipitation over 7 days, and prepare for a high average humidity of 87%, ensuring a crisp, damp atmosphere.
In December in Junction, the average temperature is -4°C (25°F). The maximum can reach 13°C (56°F), while the minimum can drop as low as -26°C (-14°F). Travelers should be prepared for a wide range of temperatures and pack accordingly to enjoy their visit comfortably.
In Junction in December, the precipitation amount is 35 mm (1.4 in) over the course of 7 days.
In Junction in December humidity is 87%. With an average temperature of -4°C (25°F), this humidity feels like a biting chill that clings to your skin, making every step outside feel like an endeavor as the cold damp air numbs your senses and weighs you down, creating an atmosphere that is both invigorating and challenging for traveling.
In Junction 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 Junction for better planning.
UV Risk Categories
Weather in Junction varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Junction, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (23°F) | 41 mm (1.6 inches) | 87% | moderate |
| February Weather | -4°C (25°F) | 51 mm (2.0 inches) | 88% | high |
| March Weather | 0°C (32°F) | 52 mm (2.0 inches) | 77% | very high |
| April Weather | 5°C (41°F) | 36 mm (1.4 inches) | 69% | extreme |
| May Weather | 11°C (52°F) | 34 mm (1.3 inches) | 54% | extreme |
| June Weather | 19°C (66°F) | 6 mm (0.3 inches) | 45% | extreme |
| July Weather | 22°C (71°F) | 23 mm (0.9 inches) | 37% | extreme |
| August Weather | 21°C (70°F) | 21 mm (0.8 inches) | 34% | extreme |
| September Weather | 16°C (61°F) | 17 mm (0.7 inches) | 47% | very high |
| October Weather | 7°C (45°F) | 28 mm (1.1 inches) | 67% | high |
| November Weather | 3°C (37°F) | 25 mm (1.0 inches) | 82% | high |
| December Weather | -4°C (25°F) | 35 mm (1.4 inches) | 87% | moderate |