Last updated: June 24, 2025
In Darby, United States, the average temperature in December hovers around -7°C (19°F), with minimums plummeting to -26°C (-15°F) and maximums reaching 9°C (48°F). Expect a significant 82 mm (3.2 in) of precipitation spread over 15 days, contributing to an average humidity of a damp 96%. Stay warm and prepared for the chilly, wet conditions!
In December in Darby, the average temperature is -7°C (19°F). The maximum can reach 9°C (48°F), while the minimum can drop as low as -26°C (-15°F). Travelers should be prepared for a wide range of temperatures and dress in layers to stay comfortable.
In Darby in December, the precipitation amount is 82 mm (3.2 in) over the course of 15 days.
In Darby in December, humidity is 96%. With an average temperature of -7°C (19°F), this humidity feels like an icy blanket clinging to your skin, making every breath a sharp reminder of the cold. Traveling in such conditions can be challenging, as your clothes become damp and the chill seeps in, leaving you longing for warmth and comfort.
In Darby 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 Darby, you can visit Hourly UV Index in Darby.
UV Risk Categories
Weather in Darby varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Darby, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -7°C (20°F) | 62 mm (2.4 inches) | 94% | moderate |
| February Weather | -6°C (21°F) | 122 mm (4.8 inches) | 93% | moderate |
| March Weather | -1°C (30°F) | 82 mm (3.2 inches) | 91% | high |
| April Weather | 1°C (34°F) | 82 mm (3.2 inches) | 87% | very high |
| May Weather | 6°C (43°F) | 72 mm (2.8 inches) | 83% | extreme |
| June Weather | 12°C (54°F) | 87 mm (3.4 inches) | 80% | extreme |
| July Weather | 18°C (64°F) | 29 mm (1.1 inches) | 75% | extreme |
| August Weather | 17°C (62°F) | 29 mm (1.1 inches) | 66% | very high |
| September Weather | 11°C (52°F) | 45 mm (1.8 inches) | 66% | very high |
| October Weather | 2°C (37°F) | 75 mm (3.0 inches) | 77% | moderate |
| November Weather | -3°C (27°F) | 74 mm (2.9 inches) | 91% | moderate |
| December Weather | -7°C (19°F) | 82 mm (3.2 inches) | 96% | low |