Last updated: June 24, 2025
In December, the average temperature in Bonney Lake, United States hovers around 5°C (41°F). Expect a chilly range with minimums plummeting to -9°C (16°F) and maximums peaking at 14°C (57°F). The month brings considerable precipitation, averaging 208 mm (8.2 in) over 19 days, coupled with a high humidity of 88%. Prepare for a brisk and damp atmosphere!
In December in Bonney Lake, the average temperature is 5°C (41°F). The maximum can reach 14°C (57°F), and the minimum can be as low as -9°C (16°F). Pack warm clothing and be prepared for chilly conditions while exploring this destination.
In Bonney Lake in December, the precipitation amount is 208 mm (8.2 in) over a span of 19 days.
In Bonney Lake in December humidity is 88%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that seeps into your bones, making it essential to bundle up for your travels, as every breath feels heavy in the air and the landscape appears cloaked in a misty shroud.
In Bonney Lake 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 Bonney Lake, you can visit Hourly UV Index in Bonney Lake.
UV Risk Categories
Weather in Bonney Lake varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Bonney Lake, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (41°F) | 187 mm (7.4 inches) | 86% | low |
| February Weather | 4°C (40°F) | 193 mm (7.6 inches) | 86% | moderate |
| March Weather | 6°C (44°F) | 138 mm (5.4 inches) | 87% | moderate |
| April Weather | 9°C (48°F) | 120 mm (4.7 inches) | 84% | high |
| May Weather | 13°C (55°F) | 69 mm (2.7 inches) | 81% | very high |
| June Weather | 16°C (60°F) | 64 mm (2.5 inches) | 82% | very high |
| July Weather | 18°C (65°F) | 13 mm (0.5 inches) | 79% | very high |
| August Weather | 19°C (66°F) | 16 mm (0.6 inches) | 63% | very high |
| September Weather | 16°C (61°F) | 97 mm (3.8 inches) | 62% | high |
| October Weather | 10°C (51°F) | 153 mm (6.0 inches) | 83% | moderate |
| November Weather | 7°C (46°F) | 193 mm (7.6 inches) | 89% | moderate |
| December Weather | 5°C (41°F) | 208 mm (8.2 inches) | 88% | low |