Last updated: June 24, 2025
In December, the average temperature in Dubuque, United States hovers around -1°C (30°F), but can swing dramatically between a frigid -22°C (-6°F) and a balmy 20°C (69°F). Expect about 43 mm (1.7 in) of precipitation spread over 6 days, with an average humidity level of 82%. Stay prepared for the weather’s unpredictable nature!
In December in Dubuque, the average temperature is -1°C (30°F). The maximum can reach 20°C (69°F), while the minimum can drop as low as -22°C (-6°F). Be prepared for a wide range of temperatures during your travels to Dubuque this month.
In Dubuque in December, the precipitation amount is 43 mm (1.7 in) over a period of 6 days.
In Dubuque in December, humidity is 82%. With an average temperature of -1°C (30°F), this humidity feels like a sharp chill that penetrates your clothing, making travel uncomfortable and dampening your spirit as you navigate through the cold, moisture-laden air.
In Dubuque 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 Dubuque, you can visit Hourly UV Index in Dubuque.
UV Risk Categories
Weather in Dubuque varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Dubuque, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (22°F) | 48 mm (1.9 inches) | 84% | moderate |
| February Weather | -5°C (23°F) | 61 mm (2.4 inches) | 85% | moderate |
| March Weather | 3°C (37°F) | 64 mm (2.5 inches) | 84% | high |
| April Weather | 8°C (47°F) | 86 mm (3.4 inches) | 83% | very high |
| May Weather | 16°C (61°F) | 150 mm (5.9 inches) | 75% | very high |
| June Weather | 22°C (72°F) | 136 mm (5.4 inches) | 79% | very high |
| July Weather | 24°C (76°F) | 92 mm (3.6 inches) | 75% | very high |
| August Weather | 22°C (72°F) | 89 mm (3.5 inches) | 69% | very high |
| September Weather | 19°C (66°F) | 118 mm (4.7 inches) | 74% | very high |
| October Weather | 11°C (52°F) | 119 mm (4.7 inches) | 79% | moderate |
| November Weather | 3°C (37°F) | 46 mm (1.8 inches) | 88% | moderate |
| December Weather | -1°C (30°F) | 43 mm (1.7 inches) | 82% | low |