Last updated: June 24, 2025
In Highland, United States, the average temperature in December hovers around 1°C (34°F). Expect chilly conditions, with minimum temperatures dipping as low as -19°C (-1°F) and occasionally reaching a maximum of 18°C (64°F). During this month, you can anticipate about 60 mm (2.4 in) of precipitation spread across 9 days, contributing to an average humidity of 84%. Be sure to bundle up and prepare for the dampness!
In December in Highland, the average temperature is 1°C (34°F). Maximums can reach 18°C (64°F), while minimums can drop as low as -19°C (-1°F). Travelers should be prepared for a wide range of temperatures during their visit.
In Highland in December, the total precipitation amount is 60 mm (2.4 in), occurring over a span of 9 days.
In Highland in December humidity is 84%. With an average temperature of 1°C (34°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and requiring extra layers to keep warm while navigating the damp 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 | -3°C (27°F) | 70 mm (2.7 inches) | 82% | moderate |
| February Weather | -2°C (29°F) | 71 mm (2.8 inches) | 83% | moderate |
| March Weather | 4°C (39°F) | 99 mm (3.9 inches) | 84% | high |
| April Weather | 9°C (48°F) | 119 mm (4.7 inches) | 85% | very high |
| May Weather | 16°C (60°F) | 162 mm (6.4 inches) | 79% | very high |
| June Weather | 22°C (71°F) | 130 mm (5.1 inches) | 82% | very high |
| July Weather | 24°C (75°F) | 103 mm (4.1 inches) | 80% | very high |
| August Weather | 23°C (73°F) | 92 mm (3.6 inches) | 81% | very high |
| September Weather | 20°C (68°F) | 74 mm (2.9 inches) | 80% | very high |
| October Weather | 13°C (56°F) | 142 mm (5.6 inches) | 82% | high |
| November Weather | 5°C (40°F) | 68 mm (2.7 inches) | 88% | moderate |
| December Weather | 1°C (34°F) | 60 mm (2.4 inches) | 84% | low |