Last updated: June 24, 2025
In Rock Port, United States, the average temperature in December hovers around 1°C (34°F). Expect chilly days, with minimums plummeting to -22°C (-8°F) and maximums reaching a pleasant 23°C (73°F). During this month, you can anticipate about 34 mm (1.3 in) of precipitation spread over 4 days, and the air feels quite humid, with an average humidity level of 83%.
In December in Rock Port, the average temperature is 1°C (34°F). Maximum temperatures can reach 23°C (73°F), while minimums can drop to as low as -22°C (-8°F). It's essential to pack layers and be prepared for a wide range of temperatures while exploring the diverse climate.
In Rock Port in December, the precipitation amount is 34 mm (1.3 in) over a span of 4 days.
In Rock Port in December, humidity is 83%. With an average temperature of 1°C (34°F), this humidity feels like a chilling embrace, making travel uncomfortable as the damp cold seeps into your bones, adding an extra layer of heaviness to the air that can leave you feeling sluggish and fatigued.
In Rock Port in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Rock Port, you can check the information here.
UV Risk Categories
Weather in Rock Port varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Rock Port, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 36 mm (1.4 inches) | 76% | moderate |
| February Weather | -2°C (28°F) | 32 mm (1.3 inches) | 80% | moderate |
| March Weather | 6°C (44°F) | 93 mm (3.7 inches) | 73% | high |
| April Weather | 11°C (52°F) | 77 mm (3.0 inches) | 74% | very high |
| May Weather | 18°C (65°F) | 154 mm (6.1 inches) | 78% | very high |
| June Weather | 25°C (77°F) | 118 mm (4.6 inches) | 82% | extreme |
| July Weather | 26°C (79°F) | 105 mm (4.1 inches) | 83% | very high |
| August Weather | 24°C (76°F) | 116 mm (4.6 inches) | 80% | very high |
| September Weather | 21°C (71°F) | 97 mm (3.8 inches) | 75% | very high |
| October Weather | 12°C (55°F) | 142 mm (5.6 inches) | 75% | high |
| November Weather | 5°C (42°F) | 34 mm (1.4 inches) | 82% | moderate |
| December Weather | 1°C (34°F) | 34 mm (1.3 inches) | 83% | moderate |