Last updated: June 24, 2025
In December, the average temperature in Harmony, United States hovers around 7°C (45°F), with temperatures ranging from a chilly -10°C (15°F) to a pleasant 23°C (74°F). Expect some rain, as 111 mm (4.4 in) of precipitation is likely over 9 days. Additionally, you'll find the air quite humid, with an average humidity of 87%.
In December in Harmony, the average temperature is 7°C (45°F). Maximums can reach 23°C (74°F), while minimums can drop as low as -10°C (15°F). Be prepared for a wide range of temperatures when traveling to Harmony during this month.
In Harmony in December, the precipitation amount is 111 mm (4.4 in) over the course of 9 days.
In Harmony in December, humidity is 87%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making outdoor adventures somewhat uncomfortable and urging travelers to seek refuge in cozy cafes or warm indoor activities.
In Harmony in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Harmony, you can check the information here.
UV Risk Categories
Weather in Harmony varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Harmony, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (41°F) | 82 mm (3.2 inches) | 86% | moderate |
| February Weather | 8°C (46°F) | 116 mm (4.6 inches) | 85% | high |
| March Weather | 11°C (52°F) | 89 mm (3.5 inches) | 84% | very high |
| April Weather | 15°C (60°F) | 123 mm (4.8 inches) | 82% | very high |
| May Weather | 20°C (69°F) | 128 mm (5.0 inches) | 83% | very high |
| June Weather | 24°C (75°F) | 92 mm (3.6 inches) | 82% | extreme |
| July Weather | 26°C (80°F) | 85 mm (3.4 inches) | 80% | very high |
| August Weather | 25°C (77°F) | 119 mm (4.7 inches) | 74% | very high |
| September Weather | 23°C (73°F) | 133 mm (5.2 inches) | 75% | very high |
| October Weather | 17°C (63°F) | 123 mm (4.9 inches) | 79% | very high |
| November Weather | 9°C (49°F) | 87 mm (3.4 inches) | 87% | moderate |
| December Weather | 7°C (45°F) | 111 mm (4.4 inches) | 87% | moderate |