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April Weather in Altona, United States

Last updated: June 24, 2025

In Altona, United States, the average temperature in April hovers around 6°C (42°F), with a minimum dipping as low as -11°C (12°F) and a maximum reaching up to 26°C (78°F). Prepare for moderate precipitation of 119 mm (4.7 in) spread over about 14 days, coupled with a high average humidity of 85%. Stay cozy and dry while enjoying the season's charm!

April Temperature in Altona

In April in Altona, the average temperature is 6°C (42°F). The maximum can reach 26°C (78°F), while the minimum can drop as low as -11°C (12°F). Travelers should be prepared for a wide range of temperatures, making it essential to pack layers for varying conditions.

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

The chart illustrates April 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, April typically has an average temperature of 6°C (42°F), with highs reaching up to 26°C (78°F) and lows dropping to around -11°C (12°F).
JanFebMarAprMayJunJulAugSepOctNovDec182129425665706860493424
Data source: Temperature data for Altona generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Altona

In Altona in April, the precipitation amount is 119 mm (4.7 in) over the course of 14 days.

April Precipitation Trends in Altona

The chart displays monthly precipitation patterns in Altona, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Altona, April typically receives around 119 mm (4.7 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec8587891191061211251177514311282
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Altona

In Altona in April, humidity is 85%. With an average temperature of 6°C (42°F), this humidity feels like walking through a thick mist, making even short strolls feel damp and chilly, which can be uncomfortable for traveling.

April Average Humidity in Altona

This chart illustrates the average monthly humidity levels in Altona, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Altona is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%86%85%80%74%76%75%78%86%89%89%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Altona

In Altona in April, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Altona.

Maximum UV Index Levels in Altona for April

The chart shows the monthly maximum UV Index (UVI) for Altona in April, 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 April, the maximum UV index in Altona typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245799887532
Data source: Altona April 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 April 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 April’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 April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
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 Weather6°C (42°F)119 mm (4.7 inches)85%high
May Weather13°C (56°F)106 mm (4.2 inches)80%very high
June Weather18°C (65°F)121 mm (4.7 inches)74%very high
July Weather21°C (71°F)125 mm (4.9 inches)76%very high
August Weather20°C (69°F)117 mm (4.6 inches)75%very high
September Weather16°C (61°F)75 mm (2.9 inches)78%high
October Weather9°C (49°F)143 mm (5.6 inches)86%moderate
November Weather1°C (34°F)112 mm (4.4 inches)88%moderate
December Weather-4°C (25°F)82 mm (3.2 inches)89%low

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