Last updated: June 24, 2025
In Altona, United States, the average temperature in December hovers around -4°C (25°F). However, be prepared for extremes; temperatures can dip as low as -28°C (-18°F) and rise to a maximum of 14°C (58°F). During this month, expect around 82 mm (3.2 in) of precipitation spread over 13 days, with humidity levels high at 89%.
In December in Altona, the average temperature is -4°C (25°F), with a maximum that can reach 14°C (58°F) and a minimum that can drop as low as -28°C (-18°F). Be prepared for a wide range of temperatures if you plan to travel during this time.
In Altona in December, the total precipitation amount is 82 mm (3.2 in), occurring over the course of 13 days.
In Altona in December humidity is 89%. With an average temperature of -4°C (25°F), this humidity feels like an intense chill that seeps into your bones, making traveling uncomfortable as you navigate through the damp, cold air.
In Altona 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 Altona, you can visit Hourly UV Index in Altona.
UV Risk Categories
Weather in Altona varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Altona, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (19°F) | 85 mm (3.3 inches) | 93% | low |
| February Weather | -6°C (21°F) | 87 mm (3.4 inches) | 92% | moderate |
| March Weather | -2°C (29°F) | 89 mm (3.5 inches) | 86% | moderate |
| April Weather | 6°C (42°F) | 119 mm (4.7 inches) | 85% | high |
| May Weather | 13°C (56°F) | 106 mm (4.2 inches) | 80% | very high |
| June Weather | 18°C (65°F) | 121 mm (4.7 inches) | 74% | very high |
| July Weather | 21°C (71°F) | 125 mm (4.9 inches) | 76% | very high |
| August Weather | 20°C (69°F) | 117 mm (4.6 inches) | 75% | very high |
| September Weather | 16°C (61°F) | 75 mm (2.9 inches) | 78% | high |
| October Weather | 9°C (49°F) | 143 mm (5.6 inches) | 86% | moderate |
| November Weather | 1°C (34°F) | 112 mm (4.4 inches) | 88% | moderate |
| December Weather | -4°C (25°F) | 82 mm (3.2 inches) | 89% | low |