Last updated: June 24, 2025
In December, the average temperature in Roscoe, United States hovers around -1°C (30°F). Expect chilly days, as temperatures can dip as low as -19°C (-1°F), while on rarer occasions, they may reach a mild 15°C (60°F). Precipitation is quite frequent, with around 104 mm (4.1 in) falling over 13 days, leading to an average humidity of 85%. Be prepared for a cool and damp atmosphere!
In December in Roscoe, the average temperature is -1°C (30°F), with maximums reaching 15°C (60°F) and minimums dropping as low as -19°C (-1°F). Be prepared for a wide range of temperatures when traveling to Roscoe during this time.
In Roscoe in December, the precipitation amount is 104 mm (4.1 in) over the course of 13 days.
In Roscoe in December humidity is 85%. With an average temperature of -1°C (30°F), this humidity feels like a heavy, damp blanket that envelops you, making even short excursions outside feel chilling and uncomfortable.
In Roscoe 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 Roscoe, you can visit Hourly UV Index in Roscoe.
UV Risk Categories
Weather in Roscoe varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Roscoe, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (24°F) | 85 mm (3.3 inches) | 87% | moderate |
| February Weather | -3°C (27°F) | 100 mm (4.0 inches) | 85% | moderate |
| March Weather | 0°C (33°F) | 94 mm (3.7 inches) | 85% | high |
| April Weather | 7°C (45°F) | 125 mm (4.9 inches) | 83% | very high |
| May Weather | 13°C (56°F) | 137 mm (5.4 inches) | 75% | very high |
| June Weather | 18°C (65°F) | 112 mm (4.4 inches) | 73% | very high |
| July Weather | 21°C (70°F) | 125 mm (4.9 inches) | 65% | very high |
| August Weather | 20°C (68°F) | 123 mm (4.8 inches) | 62% | very high |
| September Weather | 16°C (62°F) | 101 mm (4.0 inches) | 66% | very high |
| October Weather | 11°C (52°F) | 150 mm (5.9 inches) | 79% | high |
| November Weather | 3°C (37°F) | 108 mm (4.2 inches) | 87% | moderate |
| December Weather | -1°C (30°F) | 104 mm (4.1 inches) | 85% | low |