Last updated: June 24, 2025
In December, the average temperature in Rhinelander, United States hovers around -6°C (21°F), with dramatic variations: it can dip to a chilling -29°C (-21°F) or occasionally rise to a balmy 13°C (56°F). Rainfall is modest, accumulating to 59 mm (2.3 in) over 9 days, while the air remains quite humid, with an average humidity of 87%.
In December in Rhinelander, the average temperature is -6°C (21°F). The maximum can reach 13°C (56°F), while the minimum can drop to as low as -29°C (-21°F). It's essential to pack warm clothing and prepare for varying weather conditions if you plan to travel during this month.
In Rhinelander in December, the precipitation amount is 59 mm (2.3 in) over the course of 9 days.
In Rhinelander in December humidity is 87%. With an average temperature of -6°C (21°F), this humidity feels like a biting cold that seeps through layers of clothing, making outdoor travel uncomfortable and leaving you yearning for warmth.
In Rhinelander 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 Rhinelander, you can visit Hourly UV Index in Rhinelander.
UV Risk Categories
Weather in Rhinelander varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Rhinelander, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -9°C (15°F) | 33 mm (1.3 inches) | 89% | low |
| February Weather | -10°C (15°F) | 51 mm (2.0 inches) | 90% | moderate |
| March Weather | -2°C (28°F) | 48 mm (1.9 inches) | 87% | moderate |
| April Weather | 3°C (39°F) | 92 mm (3.6 inches) | 84% | high |
| May Weather | 12°C (55°F) | 90 mm (3.5 inches) | 77% | very high |
| June Weather | 18°C (65°F) | 106 mm (4.2 inches) | 75% | very high |
| July Weather | 21°C (70°F) | 107 mm (4.2 inches) | 74% | very high |
| August Weather | 19°C (66°F) | 114 mm (4.5 inches) | 73% | very high |
| September Weather | 15°C (59°F) | 96 mm (3.8 inches) | 78% | high |
| October Weather | 7°C (45°F) | 117 mm (4.6 inches) | 84% | moderate |
| November Weather | -1°C (30°F) | 50 mm (2.0 inches) | 89% | moderate |
| December Weather | -6°C (21°F) | 59 mm (2.3 inches) | 87% | low |