Last updated: June 24, 2025
In December, the average temperature in Arnold, United States hovers around -7°C (20°F), with extremes ranging from a chilling -31°C (-23°F) to a milder 9°C (49°F). Expect about 61 mm (2.4 in) of precipitation spread over 9 days, contributing to a notably high average humidity of 91%. Be prepared for a frosty yet fascinating winter experience!
In December in Arnold, the average temperature is -7°C (20°F). The maximum can reach 9°C (49°F) and the minimum can be as low as -31°C (-23°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack warm clothing for the colder days while also being ready for milder weather.
In Arnold in December, the precipitation amount is 61 mm (2.4 in) spread over 9 days.
In Arnold in December humidity is 91%. With an average temperature of -7°C (20°F), this humidity feels like an icy embrace that clings to your skin, making travel uncomfortable and challenging as every breath feels damp and heavy in the frigid air.
In Arnold 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 Arnold, you can visit Hourly UV Index in Arnold.
UV Risk Categories
Weather in Arnold varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Arnold, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -11°C (12°F) | 24 mm (1.0 inches) | 93% | low |
| February Weather | -11°C (12°F) | 32 mm (1.3 inches) | 93% | moderate |
| March Weather | -3°C (27°F) | 45 mm (1.8 inches) | 89% | moderate |
| April Weather | 2°C (36°F) | 65 mm (2.6 inches) | 85% | high |
| May Weather | 10°C (50°F) | 83 mm (3.3 inches) | 76% | very high |
| June Weather | 16°C (61°F) | 83 mm (3.3 inches) | 71% | very high |
| July Weather | 19°C (67°F) | 105 mm (4.1 inches) | 70% | very high |
| August Weather | 19°C (66°F) | 106 mm (4.2 inches) | 71% | very high |
| September Weather | 15°C (59°F) | 108 mm (4.2 inches) | 73% | high |
| October Weather | 7°C (45°F) | 117 mm (4.6 inches) | 81% | moderate |
| November Weather | -1°C (30°F) | 49 mm (1.9 inches) | 87% | moderate |
| December Weather | -7°C (20°F) | 61 mm (2.4 inches) | 91% | low |