Last updated: June 24, 2025
In Alpena, United States, the average temperature in December hovers around -2°C (29°F). This month can bring a chilling minimum of -19°C (-3°F), while temperatures can rise to a pleasant maximum of 15°C (59°F). Expect around 62 mm (2.4 in) of precipitation spread over approximately 13 days, contributing to an average humidity of a notable 89%.
In December in Alpena, the average temperature is -2°C (29°F), with maximums reaching 15°C (59°F) and minimums dropping as low as -19°C (-3°F). Travelers should be prepared for a wide range of temperatures, making layers essential for comfort during their visit.
In Alpena in December, the precipitation amount is 62 mm (2.4 in) over the course of 13 days.
In Alpena in December humidity is 89%. With an average temperature of -2°C (29°F), this humidity feels like a suffocating fog that clings to your skin, making outdoor adventures less enjoyable and giving travel a heavy and oppressive feel.
In Alpena 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 Alpena, you can visit Hourly UV Index in Alpena.
UV Risk Categories
Weather in Alpena varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Alpena, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (23°F) | 52 mm (2.0 inches) | 92% | low |
| February Weather | -5°C (23°F) | 56 mm (2.2 inches) | 91% | moderate |
| March Weather | -1°C (31°F) | 61 mm (2.4 inches) | 87% | moderate |
| April Weather | 4°C (39°F) | 94 mm (3.7 inches) | 85% | high |
| May Weather | 10°C (51°F) | 84 mm (3.3 inches) | 79% | very high |
| June Weather | 16°C (61°F) | 91 mm (3.6 inches) | 75% | very high |
| July Weather | 20°C (69°F) | 86 mm (3.4 inches) | 75% | very high |
| August Weather | 20°C (68°F) | 84 mm (3.3 inches) | 75% | very high |
| September Weather | 16°C (61°F) | 77 mm (3.0 inches) | 79% | high |
| October Weather | 10°C (50°F) | 108 mm (4.3 inches) | 85% | moderate |
| November Weather | 3°C (37°F) | 67 mm (2.6 inches) | 88% | moderate |
| December Weather | -2°C (29°F) | 62 mm (2.4 inches) | 89% | low |