Last updated: June 24, 2025
In December, the average temperature in Junction City, United States hovers around 3°C (37°F). Expect chilly conditions with a minimum of -16°C (4°F), while temperatures can rise to a cozy 18°C (65°F). Prepare for some rain, as the area receives an average precipitation of 108 mm (4.2 in) over about 11 days. With an average humidity level of 86%, it’s best to bundle up and be ready for a wet, cool atmosphere!
In December in Junction City, the average temperature is 3°C (37°F). The maximum can reach 18°C (65°F), while the minimum can drop as low as -16°C (4°F). Travelers should be prepared for a wide temperature range, bringing layered clothing to stay comfortable throughout their visit.
In Junction City in December, the precipitation amount is 108 mm (4.2 in), distributed over 11 days.
In Junction City in December humidity is 86%. With an average temperature of 3°C (37°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel less enjoyable.
In Junction City 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 Junction City, you can check the information here.
UV Risk Categories
Weather in Junction City varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Junction City, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 0°C (32°F) | 88 mm (3.5 inches) | 88% | moderate |
| February Weather | 2°C (36°F) | 118 mm (4.7 inches) | 88% | moderate |
| March Weather | 6°C (43°F) | 118 mm (4.7 inches) | 88% | high |
| April Weather | 11°C (53°F) | 136 mm (5.4 inches) | 86% | very high |
| May Weather | 18°C (64°F) | 136 mm (5.3 inches) | 82% | very high |
| June Weather | 22°C (72°F) | 168 mm (6.6 inches) | 84% | very high |
| July Weather | 24°C (76°F) | 128 mm (5.0 inches) | 82% | very high |
| August Weather | 23°C (74°F) | 107 mm (4.2 inches) | 73% | very high |
| September Weather | 20°C (69°F) | 97 mm (3.8 inches) | 73% | very high |
| October Weather | 14°C (58°F) | 105 mm (4.1 inches) | 81% | high |
| November Weather | 6°C (43°F) | 99 mm (3.9 inches) | 89% | moderate |
| December Weather | 3°C (37°F) | 108 mm (4.2 inches) | 86% | moderate |