August Weather in Harrisburg, United States

Last updated: June 24, 2025

In August, the average temperature in Harrisburg, United States hovers around 26°C (80°F), offering a delightful climate. Temperatures can range from a cool 16°C (61°F) to a warm 36°C (96°F). Be prepared for about 108 mm (4.3 in) of precipitation spread over 11 days, with average humidity at a comfortable 74%. Perfect for exploring the vibrant sights and sounds of the region!

August Temperature in Harrisburg

In August in Harrisburg, the average temperature is 26°C (80°F), with maxima soaring to 36°C (96°F) and minima dropping to 16°C (61°F). This pleasant climate makes Harrisburg an ideal destination for travelers seeking warmth and outdoor activities.

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

The chart illustrates August 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, August typically has an average temperature of 26°C (80°F), with highs reaching up to 36°C (96°F) and lows dropping to around 16°C (61°F).

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

August Precipitation in Harrisburg

In Harrisburg in August, the precipitation amount is 108 mm (4.3 in) over the course of 11 days.

August Precipitation Trends in Harrisburg

The chart displays monthly precipitation patterns in Harrisburg, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Harrisburg, August typically receives around 108 mm (4.3 inches) of precipitation spread over approximately 11 days.

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

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Millimeters (mm) Inches (in)

August Humidity in Harrisburg

In Harrisburg in August humidity is 74%. With an average temperature of 26°C (80°F), this humidity feels like a warm, thick blanket wrapping around you, making any outdoor activities feel more strenuous and sweat-inducing, so staying hydrated and taking frequent breaks in the shade is essential for enjoyable traveling.

August Average Humidity in Harrisburg

This chart illustrates the average monthly humidity levels in Harrisburg, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Harrisburg is approximately 74%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Harrisburg

In Harrisburg in August, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Harrisburg.

Maximum UV Index Levels in Harrisburg for August

The chart shows the monthly maximum UV Index (UVI) for Harrisburg in August, 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 August, the maximum UV index in Harrisburg typically reaches 10, which falls under the very high exposure category.

Data source: Harrisburg August 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 August 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 August’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 August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (41°F)	100 mm (3.9 inches)	84%	moderate
February Weather	7°C (45°F)	172 mm (6.8 inches)	83%	high
March Weather	12°C (54°F)	166 mm (6.5 inches)	81%	very high
April Weather	16°C (61°F)	136 mm (5.4 inches)	81%	very high
May Weather	22°C (72°F)	146 mm (5.8 inches)	83%	extreme
June Weather	26°C (79°F)	114 mm (4.5 inches)	83%	extreme
July Weather	28°C (82°F)	112 mm (4.4 inches)	81%	extreme
August Weather	26°C (80°F)	108 mm (4.3 inches)	74%	very high
September Weather	24°C (76°F)	86 mm (3.4 inches)	71%	very high
October Weather	18°C (64°F)	129 mm (5.1 inches)	76%	high
November Weather	10°C (50°F)	78 mm (3.1 inches)	84%	moderate
December Weather	8°C (46°F)	134 mm (5.3 inches)	88%	moderate