Last updated: June 24, 2025
In Vassar, United States, the average temperature for December hovers around 0°C (31°F), with extremes ranging from a chilly -21°C (-6°F) to a mild 17°C (64°F). Expect about 54 mm (2.1 in) of precipitation across 10 days, contributing to an average humidity of a brisk 86%. Plan accordingly!
In December in Vassar, the average temperature is 0°C (31°F). Maximums can reach 17°C (64°F), while minimums can drop as low as -21°C (-6°F). Be prepared for a wide range of temperatures, which makes layering essential for your travel wardrobe.
In Vassar in December, the total precipitation amount is 54 mm (2.1 in) over the course of 10 days.
In Vassar in December humidity is 86%. With an average temperature of 0°C (31°F), this humidity feels like an icy shroud wrapping around you, making every breath feel heavy and damp, which can be quite challenging for traveling.
In Vassar 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 Vassar, you can visit Hourly UV Index in Vassar.
UV Risk Categories
Weather in Vassar varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Vassar, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 61 mm (2.4 inches) | 88% | low |
| February Weather | -3°C (26°F) | 64 mm (2.5 inches) | 87% | moderate |
| March Weather | 2°C (35°F) | 63 mm (2.5 inches) | 85% | moderate |
| April Weather | 8°C (46°F) | 94 mm (3.7 inches) | 86% | very high |
| May Weather | 15°C (59°F) | 98 mm (3.8 inches) | 80% | very high |
| June Weather | 20°C (69°F) | 104 mm (4.1 inches) | 80% | very high |
| July Weather | 23°C (74°F) | 72 mm (2.8 inches) | 80% | very high |
| August Weather | 22°C (71°F) | 84 mm (3.3 inches) | 80% | very high |
| September Weather | 18°C (64°F) | 87 mm (3.4 inches) | 80% | high |
| October Weather | 11°C (53°F) | 107 mm (4.2 inches) | 84% | moderate |
| November Weather | 3°C (38°F) | 64 mm (2.5 inches) | 89% | moderate |
| December Weather | 0°C (31°F) | 54 mm (2.1 inches) | 86% | low |