August weather forecast
Harrisburg, PA

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A church, a mosque, and other buildings along State Street in Harrisburg, Pennsylvania
A church, a mosque, and other buildings along State Street in Harrisburg, Pennsylvania

Weather in August

In Harrisburg, August continues the robust summer trend of July, though slightly less intense. The peak heat from July slightly diminishes with the temperature lowering down to 81.5°F (27.5°C). Outdoor activities continue to be popular as locals venture out to enjoy the remaining summer days. The city echoes with the sounds of laughter, music, and conversation, manifesting the enjoyable summer vibes. August also exists as a reminder to locals to make the most of the warm weather before the arrival of fall.

Temperature

August welcomes an average high-temperature of a still warm 81.5°F (27.5°C), not much different from the preceding month. In the month of August, an average of 61.9°F (16.6°C) marks the low-temperature.

Heat index

August's mean heat index is evaluated at a tropical 87.8°F (31°C). If one continues to be active during enduring exposure, it could result in fatigue and heat cramps.
Heat index details are generally centered around shaded locations and a mild breeze. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical for babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.

Humidity

In Harrisburg, the average relative humidity in August is 77%.

Rainfall

The month with the most rainfall in Harrisburg is August, when the rain falls for 12.3 days and typically aggregates up to 1.3" (33mm) of precipitation.

Snowfall

In Harrisburg, snow does not fall in May through October.

Daylight

In August, the average length of the day is 13h and 43min.
On the first day of the month, sunrise is at 6:06 am and sunset at 8:21 pm. On the last day of August, sunrise is at 6:34 am and sunset at 7:40 pm EDT.

Sunshine

In Harrisburg, Pennsylvania, the average sunshine in August is 10.2h.

UV index

In August, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.
Note: In August, an average UV index of 5 transforms into the following instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Updated: Jun 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August?

During August, Harrisburg experiences an average high-temperature of 81.5°F (27.5°C) and a low-temperature of 61.9°F (16.6°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 87.8°F (31°C).

What is the average humidity in August?

In August, the average relative humidity is 77%.

What is the rainiest month?

The month with the most rainfall is August, when the rain falls for 12.3 days and typically aggregates up to 1.3" (33mm) of precipitation.

How many days does it rain in August in Harrisburg?

In August, the rain falls for 12.3 days. Throughout August, 1.3" (33mm) of precipitation is accumulated.

When it does not snow?

May through October are months without snowfall.

How many hours of daylight does Harrisburg have in August?

In August, the average day length is 13h and 43min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 6:06 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 7:40 pm EDT.

How long on average sun shines in August?

In Harrisburg, the average sunshine duration in August is 10.2h.

How high is the UV index in August?

The average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Harrisburg, PA

Average temperature in August - Harrisburg, PA
  • Average high temperature in August: 81.5°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in August: 61.9°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).

Average pressure in August
Harrisburg, PA

Average pressure in August - Harrisburg, PA
  • Average pressure in August: 30"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in August
Harrisburg, PA

Average wind speed in August - Harrisburg, PA
  • Average wind speed in August: 4.8mph

The windiest month (with the highest average wind speed) is March (8.2mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

Average humidity in August
Harrisburg, PA

Average humidity in August - Harrisburg, PA
  • Average humidity in August: 77%

The month with the highest relative humidity is February (80%).
The months with the lowest relative humidity are March and April (75%).

Average rainfall in August
Harrisburg, PA

Average rainfall in August - Harrisburg, PA
  • Average rainfall in August: 1.3"

The wettest month (with the highest rainfall) is August (1.3").
The driest months (with the least rainfall) are January and February (0.71").

Average rainfall days in August
Harrisburg, PA

Average rainfall days in August - Harrisburg, PA
  • Average rainfall days in August: 12.3 days

The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is January (5.7 days).

Average snowfall in August
Harrisburg, PA

Average snowfall in August - Harrisburg, PA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Harrisburg, PA

Average snowfall days in August - Harrisburg, PA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Harrisburg, PA

Average daylight in August / Average sunshine in August - Harrisburg, PA
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in August
Harrisburg, PA

Average sunshine days in August - Harrisburg, PA
  • Average sunshine days in August: 16.3 days

The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is July (14.1 days).

Average UV index in August
Harrisburg, PA

Average UV index in August - Harrisburg, PA
  • Average UV index in August: 5

The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in August
Harrisburg, PA

Average cloud cover in August - Harrisburg, PA
  • Average cloud cover in August: 32

The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in August
Harrisburg, PA

Average visibility in August - Harrisburg, PA
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

Harrisburg, Pennsylvania, USA

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