Last updated: June 24, 2025
In December, the average temperature in Lake Mills, United States hovers around -3°C (26°F), with a minimum plunging to -24°C (-10°F) and a maximum reaching 19°C (67°F). Expect about 38 mm (1.5 in) of precipitation spread over 5 days, accompanied by a high average humidity of 83%. Stay prepared for the chill!
In December in Lake Mills, the average temperature is -3°C (26°F), with maximums reaching 19°C (67°F) and minimums plummeting to -24°C (-10°F). Be sure to pack layered clothing to stay comfortable during your travels.
In Lake Mills in December, the total precipitation amount is 38 mm (1.5 in) spread over a duration of 5 days.
In Lake Mills in December, humidity is 83%. With an average temperature of -3°C (26°F), this humidity feels like a heavy blanket of cold air enveloping you, making it challenging to stay warm while traveling. The dampness seeps into your clothing, creating an uncomfortable chill that lingers even indoors, often requiring extra layers and careful planning for outdoor activities.
In Lake Mills 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 Lake Mills, you can check the information here.
UV Risk Categories
Weather in Lake Mills varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Lake Mills, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (18°F) | 35 mm (1.4 inches) | 82% | moderate |
| February Weather | -8°C (17°F) | 47 mm (1.8 inches) | 84% | moderate |
| March Weather | 1°C (34°F) | 72 mm (2.8 inches) | 80% | moderate |
| April Weather | 7°C (45°F) | 85 mm (3.3 inches) | 81% | very high |
| May Weather | 15°C (60°F) | 152 mm (6.0 inches) | 74% | very high |
| June Weather | 22°C (72°F) | 139 mm (5.5 inches) | 80% | very high |
| July Weather | 23°C (74°F) | 100 mm (4.0 inches) | 80% | very high |
| August Weather | 21°C (70°F) | 114 mm (4.5 inches) | 77% | very high |
| September Weather | 18°C (65°F) | 108 mm (4.2 inches) | 75% | very high |
| October Weather | 9°C (49°F) | 104 mm (4.1 inches) | 80% | moderate |
| November Weather | 1°C (35°F) | 45 mm (1.8 inches) | 87% | moderate |
| December Weather | -3°C (26°F) | 38 mm (1.5 inches) | 83% | moderate |