Last updated: June 24, 2025
In December, the average temperature in Harrison, United States hovers around 3°C (38°F). You can expect a minimum temperature that dips to -11°C (12°F) and a maximum that reaches up to 18°C (64°F). During this month, rainfall amounts to 108 mm (4.3 in) over approximately 10 days, with an average humidity of 80%, creating a brisk yet damp atmosphere.
In December in Harrison, the average temperature is 3°C (38°F), where the maximum can reach 18°C (64°F) and the minimum can drop as low as -11°C (12°F). It's essential to pack layers and prepare for a wide range of temperatures if you're planning to travel during this time.
In Harrison in December, the total precipitation amount is 108 mm (4.3 in) spread over a duration of 10 days.
In Harrison in December, humidity is 80%. With an average temperature of 3°C (38°F), this humidity feels like a chilly dampness that clings to your skin, making traveling uncomfortable and forcing you to bundle up just to step outside.
In Harrison 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 Harrison, you can visit Hourly UV Index in Harrison.
UV Risk Categories
Weather in Harrison varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Harrison, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (33°F) | 69 mm (2.7 inches) | 84% | moderate |
| February Weather | 2°C (36°F) | 103 mm (4.1 inches) | 82% | moderate |
| March Weather | 5°C (42°F) | 100 mm (3.9 inches) | 81% | high |
| April Weather | 11°C (52°F) | 116 mm (4.6 inches) | 78% | very high |
| May Weather | 17°C (62°F) | 123 mm (4.8 inches) | 69% | very high |
| June Weather | 22°C (72°F) | 97 mm (3.8 inches) | 69% | very high |
| July Weather | 25°C (78°F) | 146 mm (5.7 inches) | 62% | very high |
| August Weather | 24°C (76°F) | 129 mm (5.1 inches) | 65% | very high |
| September Weather | 21°C (70°F) | 100 mm (3.9 inches) | 68% | very high |
| October Weather | 15°C (60°F) | 134 mm (5.3 inches) | 74% | high |
| November Weather | 7°C (45°F) | 84 mm (3.3 inches) | 82% | moderate |
| December Weather | 3°C (38°F) | 108 mm (4.3 inches) | 80% | low |