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April Weather in Lancaster, United States

Last updated: June 24, 2025

In April, the average temperature in Lancaster, United States hovers around 8°C (47°F). Temperatures can vary significantly, with a minimum of -4°C (24°F) and soaring highs of 29°C (84°F). Expect approximately 132 mm (5.2 in) of precipitation over 13 days, contributing to an average humidity level of 80%. Be prepared for a mix of weather as you explore!

April Temperature in Lancaster

In April in Lancaster, the average temperature is 8°C (47°F). The maximum can reach 29°C (84°F) and the minimum can be as low as -4°C (24°F). Be sure to pack layers when traveling to Lancaster during this month, as the weather can vary significantly from warm to quite cold.

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

The chart illustrates April temperature patterns in Lancaster, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lancaster, April typically has an average temperature of 8°C (47°F), with highs reaching up to 29°C (84°F) and lows dropping to around -4°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec283036475868737265544132
Data source: Temperature data for Lancaster 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 Lancaster

In Lancaster in April, the precipitation amount is 132 mm (5.2 in) over the course of 13 days.

April Precipitation Trends in Lancaster

The chart displays monthly precipitation patterns in Lancaster, 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 Lancaster, April typically receives around 132 mm (5.2 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec74908713291931549989137102125
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Lancaster

In Lancaster in April, humidity is 80%. With an average temperature of 8°C (47°F), this humidity feels like you're walking through a heavy mist, making your clothes cling to your skin and every step prone to a shiver, which can be quite uncomfortable for traveling.

April Average Humidity in Lancaster

This chart illustrates the average monthly humidity levels in Lancaster, 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 Lancaster is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%82%80%72%72%67%66%71%79%84%81%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Lancaster

In Lancaster 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 Lancaster.

Maximum UV Index Levels in Lancaster for April

The chart shows the monthly maximum UV Index (UVI) for Lancaster 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 Lancaster typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568910997642
Data source: Lancaster 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 Lancaster Compares to Other Months

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

This table compares monthly weather conditions in Lancaster, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)74 mm (2.9 inches)86%moderate
February Weather-1°C (31°F)90 mm (3.5 inches)84%moderate
March Weather2°C (36°F)87 mm (3.4 inches)82%high
April Weather8°C (47°F)132 mm (5.2 inches)80%very high
May Weather14°C (58°F)91 mm (3.6 inches)72%very high
June Weather20°C (68°F)93 mm (3.7 inches)72%very high
July Weather23°C (73°F)154 mm (6.1 inches)67%very high
August Weather22°C (72°F)99 mm (3.9 inches)66%very high
September Weather18°C (65°F)89 mm (3.5 inches)71%high
October Weather12°C (54°F)137 mm (5.4 inches)78%high
November Weather5°C (41°F)102 mm (4.0 inches)84%moderate
December Weather0°C (32°F)125 mm (4.9 inches)81%low

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