Last updated: June 24, 2025
In Altona, United States, the weather in January can be quite cold, with an average temperature of -8°C (19°F). Expect some chilly extremes, as minimum temperatures can plunge to -29°C (-21°F), while maximums may reach up to 12°C (54°F). During this month, anticipate about 85 mm (3.3 in) of precipitation spread across 12 days and prepare for a feeling of dampness with an average humidity of 93%.
In January in Altona, the average temperature is -8°C (19°F). Maximum temperatures can reach 12°C (54°F), while minimums can drop as low as -29°C (-21°F). Be prepared for extreme weather and dress in layers if you're planning to travel during this time.
In Altona in January, the precipitation amount is 85 mm (3.3 in) over a duration of 12 days.
In Altona in January humidity is 93%. With an average temperature of -8°C (19°F), this humidity feels like an icy blanket enveloping you, making every breath feel heavy and cold, which can be quite challenging for traveling as the chill settles into your bones and damp clothing makes the exploration far less enjoyable.
In Altona in January, 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 January’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 |