Last updated: June 24, 2025
In December, the average temperature in Sauk City, United States hovers around -2°C (29°F), presenting a chilly atmosphere for residents and visitors alike. Expect minimum temperatures to dip as low as -23°C (-8°F), while the occasional warm spell can push the mercury up to a maximum of 18°C (65°F). With 44 mm (1.7 in) of precipitation spread over 6 days, and an average humidity level of 81%, it's advisable to dress warmly and prepare for damp conditions during your stay.
In December in Sauk City, the average temperature is -2°C (29°F). Maximums can reach 18°C (65°F), while minimums can drop as low as -23°C (-8°F). Be prepared for a wide range of temperatures and pack accordingly for your trip!
In Sauk City in December, the total precipitation amount is 44 mm (1.7 in) spread over 6 days.
In Sauk City in December humidity is 81%. With an average temperature of -2°C (29°F), this humidity feels like an uncomfortable chill that seeps into your bones, making outdoor activities less enjoyable and requiring extra layers to stay warm while traveling.
In Sauk City 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 Sauk City, you can visit Hourly UV Index in Sauk City.
UV Risk Categories
Weather in Sauk City varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sauk City, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (21°F) | 47 mm (1.9 inches) | 85% | moderate |
| February Weather | -6°C (22°F) | 54 mm (2.1 inches) | 85% | moderate |
| March Weather | 2°C (36°F) | 58 mm (2.3 inches) | 85% | moderate |
| April Weather | 8°C (46°F) | 89 mm (3.5 inches) | 85% | very high |
| May Weather | 15°C (59°F) | 129 mm (5.1 inches) | 78% | very high |
| June Weather | 21°C (70°F) | 115 mm (4.5 inches) | 80% | very high |
| July Weather | 23°C (74°F) | 88 mm (3.4 inches) | 78% | very high |
| August Weather | 22°C (71°F) | 110 mm (4.3 inches) | 76% | very high |
| September Weather | 18°C (65°F) | 116 mm (4.6 inches) | 79% | very high |
| October Weather | 10°C (51°F) | 116 mm (4.6 inches) | 83% | moderate |
| November Weather | 2°C (36°F) | 44 mm (1.7 inches) | 88% | moderate |
| December Weather | -2°C (29°F) | 44 mm (1.7 inches) | 81% | low |