January Weather in Altona, United States

Last updated: June 24, 2025

In Altona, United States, the average temperature in January hovers around -3°C (27°F). However, temperatures can swing from a chilly -25°C (-13°F) to a milder 14°C (57°F). Expect 25 mm (1.0 in) of precipitation over 5 days, with an average humidity level of 84%. Stay warm and prepare for some damp days!

January Temperature in Altona

In January in Altona, the average temperature is -3°C (27°F), with maximums reaching 14°C (57°F) and minimums dropping as low as -25°C (-13°F). This range of temperatures makes it essential for travelers to pack warm clothing to enjoy the scenic winter landscape.

January Weather in Altona: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Altona, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Altona, January typically has an average temperature of -3°C (27°F), with highs reaching up to 14°C (57°F) and lows dropping to around -25°C (-13°F).

Data source: Temperature data for Altona generated using information from the Copernicus Climate Change Service.

January Precipitation in Altona

In Altona in January, the total precipitation amount is 25 mm (1.0 in) over a span of 5 days.

January Precipitation Trends in Altona

The chart displays monthly precipitation patterns in Altona, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Altona, January typically receives around 25 mm (1.0 inches) of precipitation spread over approximately 5 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Altona

In Altona in January humidity is 84%. With an average temperature of -3°C (27°F), this humidity feels like a heavy blanket that wraps around you, making travel uncomfortable and your breath visible in the cold air.

January Average Humidity in Altona

This chart illustrates the average monthly humidity levels in Altona, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Altona is approximately 84%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Altona

In Altona in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Altona for better planning.

Maximum UV Index Levels in Altona for January

The chart shows the monthly maximum UV Index (UVI) for Altona in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Altona typically reaches 4, which falls under the moderate exposure category.

Data source: Altona January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Altona Compares to Other Months

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.

This table compares monthly weather conditions in Altona, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	25 mm (1.0 inches)	84%	moderate
February Weather	-4°C (26°F)	37 mm (1.5 inches)	85%	high
March Weather	2°C (35°F)	64 mm (2.5 inches)	75%	very high
April Weather	5°C (42°F)	69 mm (2.7 inches)	67%	extreme
May Weather	10°C (50°F)	136 mm (5.4 inches)	67%	extreme
June Weather	17°C (63°F)	80 mm (3.2 inches)	68%	extreme
July Weather	20°C (68°F)	89 mm (3.5 inches)	62%	extreme
August Weather	19°C (67°F)	81 mm (3.2 inches)	63%	extreme
September Weather	16°C (61°F)	42 mm (1.7 inches)	63%	very high
October Weather	7°C (45°F)	47 mm (1.9 inches)	72%	high
November Weather	2°C (36°F)	30 mm (1.2 inches)	79%	moderate
December Weather	-1°C (30°F)	21 mm (0.8 inches)	85%	moderate