Last updated: June 24, 2025
In December, the average temperature in Kettle Falls, United States hovers around -2°C (29°F), with extremes ranging from a chilly -26°C (-15°F) to a mild 14°C (57°F). Expect 67 mm (2.6 in) of precipitation spread over approximately 12 days, while the air remains notably humid with an average humidity of 93%.
In December in Kettle Falls, the average temperature is -2°C (29°F). Maximum temperatures can reach 14°C (57°F), while minimums can drop as low as -26°C (-15°F). Travelers should prepare for a wide range of temperatures and dress in layers to stay comfortable.
In Kettle Falls in December, the precipitation amount is 67 mm (2.6 in) distributed over 12 days.
In Kettle Falls in December humidity is 93%. With an average temperature of -2°C (29°F), this humidity feels like a dense, frosty blanket that clings to you, making the cold seep into your bones and transforming outdoor activities into a chilly challenge.
In Kettle 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 Kettle Falls, you can visit Hourly UV Index in Kettle Falls.
UV Risk Categories
Weather in Kettle Falls varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Kettle Falls, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 73 mm (2.9 inches) | 90% | low |
| February Weather | -3°C (26°F) | 56 mm (2.2 inches) | 91% | moderate |
| March Weather | 2°C (36°F) | 58 mm (2.3 inches) | 89% | moderate |
| April Weather | 7°C (45°F) | 63 mm (2.5 inches) | 85% | high |
| May Weather | 13°C (56°F) | 58 mm (2.3 inches) | 82% | very high |
| June Weather | 18°C (64°F) | 37 mm (1.5 inches) | 81% | very high |
| July Weather | 22°C (73°F) | 12 mm (0.5 inches) | 84% | very high |
| August Weather | 22°C (71°F) | 23 mm (0.9 inches) | 75% | very high |
| September Weather | 15°C (60°F) | 39 mm (1.5 inches) | 74% | high |
| October Weather | 7°C (45°F) | 51 mm (2.0 inches) | 85% | moderate |
| November Weather | 2°C (35°F) | 60 mm (2.4 inches) | 88% | moderate |
| December Weather | -2°C (29°F) | 67 mm (2.6 inches) | 93% | low |