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April Weather in Altoona, United States

Last updated: June 24, 2025

In Altoona, United States, the average temperature in April hovers around 6°C (44°F). Expect a wide temperature range, with minimums plunging to -17°C (1°F) and maximums soaring to 28°C (83°F). Additionally, be prepared for 95 mm (3.7 in) of precipitation over 11 days, accompanied by an average humidity of 85%.

April Temperature in Altoona

In April in Altoona, the average temperature is 6°C (44°F). The maximum can reach 28°C (83°F) and the minimum can be as low as -17°C (1°F). Be prepared for a wide range of temperatures, making it essential to pack accordingly for your travels.

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

The chart illustrates April temperature patterns in Altoona, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Altoona, April typically has an average temperature of 6°C (44°F), with highs reaching up to 28°C (83°F) and lows dropping to around -17°C (1°F).
JanFebMarAprMayJunJulAugSepOctNovDec171833435870736963483324
Data source: Temperature data for Altoona 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 Altoona

In Altoona in April, the total precipitation amount is 95 mm (3.7 in) spread over 11 days.

April Precipitation Trends in Altoona

The chart displays monthly precipitation patterns in Altoona, 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 Altoona, April typically receives around 95 mm (3.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec33485595130132117127961115151
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Altoona

In Altoona in April, humidity is 85%. With an average temperature of 6°C (44°F), this humidity feels like a chilly dampness that seeps into your clothes, making travel uncomfortable and adding an extra layer of chill to the air.

April Average Humidity in Altoona

This chart illustrates the average monthly humidity levels in Altoona, 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 Altoona is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%89%86%85%79%80%80%78%80%84%89%85%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Altoona

In Altoona in April, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Altoona.

Maximum UV Index Levels in Altoona for April

The chart shows the monthly maximum UV Index (UVI) for Altoona 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 Altoona typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458810997532
Data source: Altoona 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 Altoona Compares to Other Months

Weather in Altoona varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Altoona, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Altoona, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (17°F)33 mm (1.3 inches)88%low
February Weather-8°C (18°F)48 mm (1.9 inches)89%moderate
March Weather1°C (34°F)55 mm (2.2 inches)86%moderate
April Weather6°C (44°F)95 mm (3.7 inches)85%very high
May Weather15°C (59°F)130 mm (5.1 inches)79%very high
June Weather21°C (70°F)132 mm (5.2 inches)80%very high
July Weather23°C (73°F)117 mm (4.6 inches)80%very high
August Weather21°C (70°F)127 mm (5.0 inches)78%very high
September Weather17°C (63°F)96 mm (3.8 inches)80%high
October Weather9°C (48°F)111 mm (4.4 inches)84%moderate
November Weather1°C (34°F)51 mm (2.0 inches)89%moderate
December Weather-4°C (24°F)51 mm (2.0 inches)85%low

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