April Weather in Lancaster, United States

Last updated: June 24, 2025

In April, the average temperature in Lancaster, United States hovers around 15°C (59°F), with minimums dipping to 1°C (33°F) and maximums soaring up to 31°C (88°F). Prepare for the possibility of rain, as 97 mm (3.8 in) of precipitation is expected over 10 days. With an average humidity level of 81%, it's a month to embrace the refreshing, yet sometimes damp, climate!

April Temperature in Lancaster

In April in Lancaster, the average temperature is 15°C (59°F). The maximum can reach 31°C (88°F), and the minimum can be as low as 1°C (33°F). This range makes Lancaster a great destination for travelers seeking both warmth and cooler evenings.

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 15°C (59°F), with highs reaching up to 31°C (88°F) and lows dropping to around 1°C (33°F).

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

April Precipitation in Lancaster

In Lancaster in April, the total precipitation amount is 97 mm (3.8 in) over a span of 10 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 97 mm (3.8 inches) of precipitation spread over approximately 10 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

April Humidity in Lancaster

In Lancaster in April humidity is 81%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket draped over you, making traveling quite uncomfortable as you constantly wipe away beads of sweat and feel the stickiness clinging to your clothes.

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 81%, offering insight into how humid the weather typically is during this month.

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 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check 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 9, which falls under the very high exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	76 mm (3.0 inches)	84%	moderate
February Weather	7°C (44°F)	105 mm (4.1 inches)	83%	moderate
March Weather	9°C (49°F)	92 mm (3.6 inches)	82%	high
April Weather	15°C (59°F)	97 mm (3.8 inches)	81%	very high
May Weather	20°C (68°F)	100 mm (3.9 inches)	80%	very high
June Weather	24°C (76°F)	109 mm (4.3 inches)	82%	very high
July Weather	27°C (81°F)	133 mm (5.2 inches)	81%	very high
August Weather	26°C (79°F)	158 mm (6.2 inches)	81%	very high
September Weather	23°C (74°F)	117 mm (4.6 inches)	78%	very high
October Weather	18°C (65°F)	129 mm (5.1 inches)	80%	high
November Weather	11°C (51°F)	79 mm (3.1 inches)	84%	moderate
December Weather	7°C (45°F)	96 mm (3.8 inches)	84%	moderate