August weather forecast
Harrisburg, PA

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

August, the last month of the summer in Harrisburg, is another warm month, with an average temperature ranging between min 61.9°F (16.6°C) and max 81.5°F (27.5°C).

Temperature

In August, the average high-temperature is practically the same as in July - a still moderately hot 81.5°F (27.5°C). In August, the average low-temperature is 61.9°F (16.6°C).

Heat index

The average heat index in August is evaluated at a tropical 87.8°F (31°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'real feel', or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like activity, metabolic differences, pregnancy, and clothing affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity in August is 77%.

Rainfall

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.

Snowfall

May through October are months without snowfall in Harrisburg.

Daylight

The average length of the day in August in Harrisburg is 13h and 43min.
On the first day of the month, sunrise is at 6:05 am and sunset at 8:22 pm. On the last day of August, in Harrisburg, sunrise is at 6:34 am and sunset at 7:41 pm EDT.

Sunshine

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

UV index

The average daily maximum UV index in August in Harrisburg is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: In August, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in August in Harrisburg?

The average high-temperature, in August, in Harrisburg, is 81.5°F (27.5°C), while the average low-temperature is 61.9°F (16.6°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 87.8°F (31°C).

What is the average humidity in August in Harrisburg?

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

What is the rainiest month in Harrisburg?

The month with the most rainfall in Harrisburg, Pennsylvania, 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, in Harrisburg, Pennsylvania, the rain falls for 12.3 days. Throughout August, 1.3" (33mm) of precipitation is accumulated.

When it does not snow in Harrisburg?

May through October are months without snowfall in Harrisburg, Pennsylvania.

What is the average length of the day in August in Harrisburg?

The average day length in August is 13h and 43min.

What time are sunrise and sunset in August in Harrisburg?

In August, on the first day of the month, sunrise is at 6:05 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 7:41 pm EDT.

How long on average sun shines in August in Harrisburg?

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

How high is the UV index in August in Harrisburg?

The average daily maximum UV index in August in Harrisburg, Pennsylvania, is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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 43min

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 22min).

  • Average sunshine in August: 10h and 12min

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).

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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).

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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).

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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).

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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).

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