April Weather in Harrisburg, United States

Last updated: June 24, 2025

In Harrisburg, United States, the average temperature in April hovers around 8°C (46°F). Expect a wide range, with minimums dipping as low as -14°C (8°F) and maximums reaching up to 31°C (88°F). During this period, precipitation averages about 53 mm (2.1 in) over 9 days, accompanied by an average humidity of 60%.

April Temperature in Harrisburg

In April in Harrisburg, the average temperature is 8°C (46°F). The maximum can reach 31°C (88°F), while the minimum can drop as low as -14°C (8°F). It's advisable to pack for a wide range of temperatures when traveling during this month.

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

The chart illustrates April temperature patterns in Harrisburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harrisburg, April typically has an average temperature of 8°C (46°F), with highs reaching up to 31°C (88°F) and lows dropping to around -14°C (8°F).

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

April Precipitation in Harrisburg

In Harrisburg in April, the total precipitation amount is 53 mm (2.1 in) spread over 9 days.

April Precipitation Trends in Harrisburg

The chart displays monthly precipitation patterns in Harrisburg, 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 Harrisburg, April typically receives around 53 mm (2.1 inches) of precipitation spread over approximately 9 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 Harrisburg

In Harrisburg in April, humidity is 60%. With an average temperature of 8°C (46°F), this humidity feels like a brisk chill that can make walking outdoors refreshing yet slightly damp, prompting travelers to layer up for comfort while exploring the sights.

April Average Humidity in Harrisburg

This chart illustrates the average monthly humidity levels in Harrisburg, 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 Harrisburg is approximately 60%, 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 Harrisburg

In Harrisburg 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 Harrisburg.

Maximum UV Index Levels in Harrisburg for April

The chart shows the monthly maximum UV Index (UVI) for Harrisburg 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 Harrisburg typically reaches 9, which falls under the very high exposure category.

Data source: Harrisburg 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 Harrisburg Compares to Other Months

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

This table compares monthly weather conditions in Harrisburg, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	14 mm (0.6 inches)	72%	moderate
February Weather	-2°C (30°F)	23 mm (0.9 inches)	76%	moderate
March Weather	5°C (40°F)	67 mm (2.7 inches)	61%	high
April Weather	8°C (46°F)	53 mm (2.1 inches)	60%	very high
May Weather	13°C (55°F)	117 mm (4.6 inches)	74%	very high
June Weather	21°C (69°F)	57 mm (2.2 inches)	82%	extreme
July Weather	24°C (75°F)	46 mm (1.8 inches)	82%	extreme
August Weather	22°C (73°F)	35 mm (1.4 inches)	84%	very high
September Weather	19°C (66°F)	24 mm (1.0 inches)	75%	very high
October Weather	9°C (48°F)	36 mm (1.4 inches)	73%	high
November Weather	5°C (42°F)	25 mm (1.0 inches)	74%	moderate
December Weather	1°C (35°F)	18 mm (0.7 inches)	77%	moderate