Last updated: June 24, 2025
In Highland, United States during December, the average temperature hovers around -2°C (29°F). Expect chilly conditions, with minimums plummeting to -22°C (-8°F) and daytime highs reaching up to 19°C (67°F). With 41 mm (1.6 in) of precipitation spread over 6 days, staying dry can be a challenge. The air is quite humid too, with an average humidity of 82%, making it essential to bundle up when venturing outdoors!
In December in Highland, the average temperature is -2°C (29°F). The maximum can reach 19°C (67°F), while the minimum can drop as low as -22°C (-8°F). Be sure to pack for a wide range of temperatures while traveling during this time.
In Highland in December, the precipitation amount is 41 mm (1.6 in) over the course of 6 days.
In Highland in December, humidity is 82%. With an average temperature of -2°C (29°F), this humidity feels like a frigid chill that seeps into your bones, making travel quite uncomfortable and forcing you to bundle up tightly to ward off the damp cold that lingers in the air.
In Highland 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 Highland, you can visit Hourly UV Index in Highland.
UV Risk Categories
Weather in Highland varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Highland, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (21°F) | 45 mm (1.8 inches) | 84% | low |
| February Weather | -5°C (23°F) | 57 mm (2.2 inches) | 85% | moderate |
| March Weather | 3°C (37°F) | 59 mm (2.3 inches) | 84% | moderate |
| April Weather | 8°C (47°F) | 85 mm (3.4 inches) | 83% | very high |
| May Weather | 16°C (60°F) | 136 mm (5.4 inches) | 75% | very high |
| June Weather | 22°C (71°F) | 129 mm (5.1 inches) | 79% | very high |
| July Weather | 24°C (75°F) | 103 mm (4.0 inches) | 75% | very high |
| August Weather | 22°C (71°F) | 96 mm (3.8 inches) | 69% | very high |
| September Weather | 18°C (65°F) | 119 mm (4.7 inches) | 74% | very high |
| October Weather | 11°C (51°F) | 124 mm (4.9 inches) | 79% | moderate |
| November Weather | 2°C (37°F) | 46 mm (1.8 inches) | 88% | moderate |
| December Weather | -2°C (29°F) | 41 mm (1.6 inches) | 82% | low |