Last updated: June 24, 2025
In December, the average temperature in Grangeville, United States hovers around 0°C (32°F). Expect chilly conditions with minimums dipping to -21°C (-5°F), while highs can reach a pleasant 16°C (61°F). This month also sees 86 mm (3.4 in) of precipitation spread over 16 days, resulting in an average humidity of 89%. Prepare for a crisp and damp atmosphere!
In December, in Grangeville, the average temperature is 0°C (32°F). The maximum can reach 16°C (61°F), while the minimum can drop as low as -21°C (-5°F). Travelers should be prepared for a wide range of temperatures during this time.
In Grangeville in December, the precipitation amount is 86 mm (3.4 in) over a period of 16 days.
In Grangeville in December humidity is 89%. With an average temperature of 0°C (32°F), this humidity feels like a chilly embrace that makes every breath feel heavy and damp, turning your travel experience into a constant dance with the cold and moisture in the air, leaving you longing for warmth and comfort at every turn.
In Grangeville 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 Grangeville, you can visit Hourly UV Index in Grangeville.
UV Risk Categories
Weather in Grangeville varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Grangeville, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (31°F) | 65 mm (2.6 inches) | 90% | moderate |
| February Weather | -1°C (31°F) | 133 mm (5.2 inches) | 91% | moderate |
| March Weather | 3°C (38°F) | 90 mm (3.5 inches) | 88% | high |
| April Weather | 7°C (45°F) | 106 mm (4.2 inches) | 84% | very high |
| May Weather | 12°C (53°F) | 93 mm (3.6 inches) | 77% | very high |
| June Weather | 16°C (61°F) | 83 mm (3.3 inches) | 78% | very high |
| July Weather | 22°C (71°F) | 7 mm (0.3 inches) | 77% | very high |
| August Weather | 21°C (70°F) | 30 mm (1.2 inches) | 63% | very high |
| September Weather | 15°C (60°F) | 45 mm (1.8 inches) | 60% | very high |
| October Weather | 8°C (46°F) | 79 mm (3.1 inches) | 77% | moderate |
| November Weather | 3°C (38°F) | 82 mm (3.2 inches) | 86% | moderate |
| December Weather | 0°C (32°F) | 86 mm (3.4 inches) | 89% | low |