Last updated: June 24, 2025
In December, the average temperature in Shullsburg, United States hovers around -1°C (30°F), with potential extremes ranging from a chilly -21°C (-6°F) to a surprisingly warm 20°C (67°F). Expect 44 mm (1.7 in) of precipitation over approximately 6 days, accompanied by a high average humidity of 82%. Grab your warmest attire, and be prepared for a mix of weather!
In December in Shullsburg, the average temperature is -1°C (30°F), with maximums reaching 20°C (67°F) and minimums dropping as low as -21°C (-6°F). Be prepared for a wide range of temperatures when traveling, as this month offers both chilly days and unseasonably warm spells.
In Shullsburg in December, the total precipitation amount is 44 mm (1.7 in) spread over 6 days.
In Shullsburg 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 Shullsburg 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 Shullsburg, you can visit Hourly UV Index in Shullsburg.
UV Risk Categories
Weather in Shullsburg varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Shullsburg, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (22°F) | 53 mm (2.1 inches) | 84% | moderate |
| February Weather | -5°C (24°F) | 59 mm (2.3 inches) | 85% | moderate |
| March Weather | 3°C (38°F) | 65 mm (2.6 inches) | 84% | high |
| April Weather | 8°C (47°F) | 89 mm (3.5 inches) | 83% | very high |
| May Weather | 16°C (61°F) | 144 mm (5.7 inches) | 75% | very high |
| June Weather | 22°C (72°F) | 133 mm (5.2 inches) | 79% | very high |
| July Weather | 24°C (75°F) | 86 mm (3.4 inches) | 75% | very high |
| August Weather | 22°C (72°F) | 102 mm (4.0 inches) | 69% | very high |
| September Weather | 19°C (66°F) | 110 mm (4.3 inches) | 74% | very high |
| October Weather | 11°C (52°F) | 114 mm (4.5 inches) | 79% | moderate |
| November Weather | 3°C (37°F) | 45 mm (1.8 inches) | 88% | moderate |
| December Weather | -1°C (30°F) | 44 mm (1.7 inches) | 82% | low |