Last updated: June 24, 2025
In December, the average temperature in Randolph, United States hovers around -1°C (31°F), with the potential to dip as low as -21°C (-5°F) and occasionally reach a maximum of 16°C (62°F). Additionally, you can expect 118 mm (4.6 in) of precipitation spread over 18 days, contributing to an average humidity level of 87%. Prepare for a chilly and damp month!
In December in Randolph, the average temperature is -1°C (31°F). The maximum can reach 16°C (62°F), while the minimum can drop as low as -21°C (-5°F). Visitors should be prepared for a wide range of temperatures during this month.
In Randolph in December, the total precipitation amount reaches 118 mm (4.6 in) over the course of 18 days.
In Randolph in December humidity is 87%. With an average temperature of -1°C (31°F), this humidity feels like a biting chill that seeps through your clothes, making traveling incredibly uncomfortable as it adds a layer of dampness to the already cold air, leaving you shivering and wishing for warmth.
In Randolph 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 Randolph, you can visit Hourly UV Index in Randolph.
UV Risk Categories
Weather in Randolph varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Randolph, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 102 mm (4.0 inches) | 91% | moderate |
| February Weather | -2°C (28°F) | 110 mm (4.3 inches) | 91% | moderate |
| March Weather | 1°C (34°F) | 103 mm (4.1 inches) | 88% | high |
| April Weather | 7°C (45°F) | 130 mm (5.1 inches) | 88% | very high |
| May Weather | 14°C (57°F) | 135 mm (5.3 inches) | 82% | very high |
| June Weather | 18°C (65°F) | 146 mm (5.7 inches) | 79% | very high |
| July Weather | 21°C (70°F) | 154 mm (6.1 inches) | 77% | very high |
| August Weather | 20°C (68°F) | 113 mm (4.4 inches) | 72% | very high |
| September Weather | 17°C (62°F) | 88 mm (3.5 inches) | 76% | very high |
| October Weather | 11°C (52°F) | 147 mm (5.8 inches) | 83% | high |
| November Weather | 3°C (37°F) | 125 mm (4.9 inches) | 88% | moderate |
| December Weather | -1°C (31°F) | 118 mm (4.6 inches) | 87% | low |