April Weather in Lancaster, United States

Last updated: June 24, 2025

In Lancaster, United States, the average temperature for April hovers around 8°C (47°F). Temperatures can vary widely, with a minimum of -8°C (18°F) and a maximum of 27°C (81°F). Expect 85 mm (3.4 in) of precipitation spread over 11 days, contributing to a high average humidity of 83%. Prepare accordingly for this diverse weather!

April Temperature in Lancaster

In April in Lancaster, the average temperature is 8°C (47°F). Maximum temperatures can reach 27°C (81°F), while minimums can drop as low as -8°C (18°F). Be prepared for a wide range of temperatures when traveling during this month.

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 27°C (81°F) and lows dropping to around -8°C (18°F).
JanFebMarAprMayJunJulAugSepOctNovDec212337476172757266513730
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 85 mm (3.4 in) over the course of 11 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 85 mm (3.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec46596186143135103871161254741
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 83%. With an average temperature of 8°C (47°F), this humidity feels like a chilly dampness that clings to your skin, making travel uncomfortable and leaving you yearning for warmth and dryness as you explore.

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 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%85%84%83%75%79%75%69%74%79%88%82%
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.
JanFebMarAprMayJunJulAugSepOctNovDec34589101098532
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-6°C (21°F)46 mm (1.8 inches)84%moderate
February Weather-5°C (23°F)59 mm (2.3 inches)85%moderate
March Weather3°C (37°F)61 mm (2.4 inches)84%moderate
April Weather8°C (47°F)85 mm (3.4 inches)83%very high
May Weather16°C (61°F)143 mm (5.6 inches)75%very high
June Weather22°C (72°F)135 mm (5.3 inches)79%very high
July Weather24°C (76°F)103 mm (4.0 inches)75%very high
August Weather22°C (72°F)87 mm (3.4 inches)69%very high
September Weather19°C (66°F)116 mm (4.6 inches)74%very high
October Weather11°C (52°F)124 mm (4.9 inches)79%moderate
November Weather3°C (37°F)47 mm (1.8 inches)88%moderate
December Weather-1°C (30°F)41 mm (1.6 inches)82%low

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