Last updated: June 24, 2025
In December, the average temperature in Sugar Grove, United States hovers around -1°C (31°F), with a minimum plunge as low as -20°C (-3°F) and a maximum rise up to 16°C (62°F). Expect steady precipitation of 110 mm (4.3 in) spread over about 17 days, accompanied by a high average humidity of 88%. Prepare for a chilly and damp month!
In December in Sugar Grove, the average temperature is -1°C (31°F), with maximums reaching 16°C (62°F) and minimums dropping as low as -20°C (-3°F). It's essential to pack warm clothing and be prepared for a wide range of temperatures while exploring.
In Sugar Grove in December, the precipitation amount is 110 mm (4.3 in) spread over 17 days.
In Sugar Grove in December, humidity is 88%. With an average temperature of -1°C (31°F), this humidity feels like a biting cold that penetrates your clothing, making outdoor exploration challenging and the air clingy, adding an extra chill that can make you feel even colder than the temperature suggests.
In Sugar Grove 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 Sugar Grove, you can visit Hourly UV Index in Sugar Grove.
UV Risk Categories
Weather in Sugar Grove varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sugar Grove, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 100 mm (3.9 inches) | 89% | moderate |
| February Weather | -2°C (28°F) | 112 mm (4.4 inches) | 90% | moderate |
| March Weather | 1°C (35°F) | 101 mm (4.0 inches) | 89% | high |
| April Weather | 7°C (45°F) | 127 mm (5.0 inches) | 88% | very high |
| May Weather | 14°C (57°F) | 139 mm (5.5 inches) | 80% | very high |
| June Weather | 18°C (66°F) | 140 mm (5.5 inches) | 79% | very high |
| July Weather | 21°C (70°F) | 135 mm (5.3 inches) | 74% | very high |
| August Weather | 20°C (68°F) | 106 mm (4.2 inches) | 64% | very high |
| September Weather | 17°C (63°F) | 90 mm (3.5 inches) | 67% | very high |
| October Weather | 11°C (52°F) | 131 mm (5.2 inches) | 81% | high |
| November Weather | 3°C (38°F) | 116 mm (4.6 inches) | 89% | moderate |
| December Weather | -1°C (31°F) | 110 mm (4.3 inches) | 88% | low |