Last updated: June 24, 2025
In December, the average temperature in Cleveland, United States hovers around -1°C (30°F), creating a chilly atmosphere. Temps can plunge to a frigid -20°C (-3°F), while occasionally reaching a mild 17°C (63°F). Expect around 123 mm (4.8 in) of precipitation over 18 days, contributing to an average humidity of 86%, ensuring a damp yet invigorating environment.
In December in Cleveland, the average temperature is -1°C (30°F), with a maximum that can reach 17°C (63°F) and a minimum that can dip as low as -20°C (-3°F). Be prepared for a wide range of temperatures when traveling to Cleveland during this month.
In Cleveland in December, the precipitation amount is 123 mm (4.8 in) spread over 18 days.
In Cleveland in December, humidity is 86%. With an average temperature of -1°C (30°F), this humidity feels like a heavy blanket wrapping around you, making traveling feel much colder and more uncomfortable than the temperature suggests.
In Cleveland 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 Cleveland, you can visit Hourly UV Index in Cleveland.
UV Risk Categories
Weather in Cleveland varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Cleveland, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 104 mm (4.1 inches) | 90% | moderate |
| February Weather | -3°C (28°F) | 111 mm (4.4 inches) | 90% | moderate |
| March Weather | 1°C (34°F) | 102 mm (4.0 inches) | 87% | high |
| April Weather | 8°C (46°F) | 134 mm (5.3 inches) | 88% | very high |
| May Weather | 14°C (58°F) | 132 mm (5.2 inches) | 82% | very high |
| June Weather | 19°C (67°F) | 116 mm (4.6 inches) | 79% | very high |
| July Weather | 22°C (72°F) | 184 mm (7.2 inches) | 78% | very high |
| August Weather | 21°C (71°F) | 130 mm (5.1 inches) | 76% | very high |
| September Weather | 17°C (64°F) | 93 mm (3.6 inches) | 78% | high |
| October Weather | 12°C (53°F) | 178 mm (7.0 inches) | 84% | high |
| November Weather | 4°C (39°F) | 122 mm (4.8 inches) | 89% | moderate |
| December Weather | -1°C (30°F) | 123 mm (4.8 inches) | 86% | low |