Last updated: June 24, 2025
In December, the average temperature in Harrison, United States hovers around -2°C (29°F), with a minimum dropping as low as -23°C (-9°F) and reaching a maximum of 15°C (60°F). Expect 62 mm (2.4 in) of precipitation spread over 9 days, contributing to a generally high humidity level of 86%. Prepare accordingly for chilly and damp conditions!
In December in Harrison, the average temperature is -2°C (29°F). The maximum can reach 15°C (60°F) and the minimum can be as low as -23°C (-9°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack accordingly for both cold and milder conditions.
In Harrison in December, the precipitation amount is 62 mm (2.4 in) over the course of 9 days.
In Harrison in December humidity is 86%. With an average temperature of -2°C (29°F), this humidity feels like a damp chill that seeps through layers of clothing, making outdoor activities uncomfortable and travel plans challenging.
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 | -5°C (23°F) | 53 mm (2.1 inches) | 88% | low |
| February Weather | -5°C (23°F) | 51 mm (2.0 inches) | 87% | moderate |
| March Weather | 1°C (33°F) | 53 mm (2.1 inches) | 85% | moderate |
| April Weather | 6°C (44°F) | 87 mm (3.4 inches) | 86% | very high |
| May Weather | 14°C (57°F) | 106 mm (4.2 inches) | 80% | very high |
| June Weather | 19°C (67°F) | 107 mm (4.2 inches) | 80% | very high |
| July Weather | 22°C (73°F) | 81 mm (3.2 inches) | 80% | very high |
| August Weather | 21°C (70°F) | 92 mm (3.6 inches) | 80% | very high |
| September Weather | 17°C (62°F) | 82 mm (3.2 inches) | 80% | high |
| October Weather | 10°C (50°F) | 125 mm (4.9 inches) | 84% | moderate |
| November Weather | 2°C (36°F) | 55 mm (2.1 inches) | 89% | moderate |
| December Weather | -2°C (29°F) | 62 mm (2.4 inches) | 86% | low |