Last updated: June 24, 2025
In Clam Falls, United States, the average temperature in December hovers around -6°C (22°F), with temperatures dipping as low as -30°C (-22°F) and reaching a maximum of 14°C (58°F). During this month, expect around 58 mm (2.3 in) of precipitation spread over 8 days, all while the air remains fairly damp with an average humidity of 85%.
In December in Clam Falls, the average temperature is -6°C (22°F). Maximum temperatures can reach 14°C (58°F), while minimums can drop to as low as -30°C (-22°F). Travelers should be prepared for a wide range of temperatures and dress accordingly to stay comfortable in the cold conditions.
In Clam Falls in December, the precipitation amount is 58 mm (2.3 in) over a span of 8 days.
In Clam Falls in December humidity is 85%. With an average temperature of -6°C (22°F), this humidity feels like an icy mist clinging to your skin, making outdoor activities uncomfortably chilly and causing your breath to cloud in the cold air, leaving you yearning for warmth and cozy indoor retreats while traveling.
In Clam Falls 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 Clam Falls, you can visit Hourly UV Index in Clam Falls.
UV Risk Categories
Weather in Clam Falls varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Clam Falls, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -10°C (15°F) | 23 mm (0.9 inches) | 88% | low |
| February Weather | -9°C (16°F) | 35 mm (1.4 inches) | 89% | moderate |
| March Weather | -1°C (31°F) | 49 mm (1.9 inches) | 86% | moderate |
| April Weather | 5°C (42°F) | 92 mm (3.6 inches) | 85% | high |
| May Weather | 14°C (57°F) | 111 mm (4.4 inches) | 79% | very high |
| June Weather | 20°C (69°F) | 99 mm (3.9 inches) | 80% | very high |
| July Weather | 22°C (72°F) | 102 mm (4.0 inches) | 80% | very high |
| August Weather | 20°C (69°F) | 125 mm (4.9 inches) | 78% | very high |
| September Weather | 17°C (62°F) | 97 mm (3.8 inches) | 80% | high |
| October Weather | 8°C (47°F) | 99 mm (3.9 inches) | 84% | moderate |
| November Weather | 0°C (32°F) | 42 mm (1.6 inches) | 89% | moderate |
| December Weather | -6°C (22°F) | 58 mm (2.3 inches) | 85% | low |