Last updated: June 24, 2025
In December, the average temperature in Manlius, United States hovers around -1°C (31°F), with a range that can dip to a chilling -19°C (-2°F) and peak at a cozy 17°C (63°F). Expect 105 mm (4.1 in) of precipitation spread over 17 days, contributing to an average humidity level of 86%. Be prepared for a mix of cool weather and damp conditions!
In December in Manlius, the average temperature is -1°C (31°F), with maximums reaching 17°C (63°F) and minimums dropping as low as -19°C (-2°F). Be prepared for a wide range of temperatures if you plan to travel during this time!
In Manlius in December, the precipitation amount is 105 mm (4.1 in) over a period of 17 days.
In Manlius in December humidity is 86%. With an average temperature of -1°C (31°F), this humidity feels like an eerie chill enveloping you, making travel uncomfortable as the damp air bites into your skin and the cold seeps through even the warmest of clothes, creating an atmosphere that is heavy and uninviting.
In Manlius 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 Manlius, you can visit Hourly UV Index in Manlius.
UV Risk Categories
Weather in Manlius varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Manlius, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 95 mm (3.7 inches) | 90% | moderate |
| February Weather | -2°C (28°F) | 99 mm (3.9 inches) | 90% | moderate |
| March Weather | 1°C (34°F) | 95 mm (3.8 inches) | 87% | high |
| April Weather | 7°C (46°F) | 124 mm (4.9 inches) | 88% | very high |
| May Weather | 14°C (58°F) | 129 mm (5.1 inches) | 82% | very high |
| June Weather | 19°C (67°F) | 115 mm (4.5 inches) | 79% | very high |
| July Weather | 22°C (72°F) | 184 mm (7.2 inches) | 78% | very high |
| August Weather | 21°C (70°F) | 138 mm (5.4 inches) | 76% | very high |
| September Weather | 17°C (63°F) | 93 mm (3.7 inches) | 78% | high |
| October Weather | 12°C (53°F) | 167 mm (6.6 inches) | 84% | high |
| November Weather | 4°C (39°F) | 110 mm (4.3 inches) | 89% | moderate |
| December Weather | -1°C (31°F) | 105 mm (4.1 inches) | 86% | low |