Harrisburg
Pennsylvania, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
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
August, the last month of the summer, in Harrisburg, is also a moderately hot month, with average temperature ranging between min 61.9°F (16.6°C) and max 81.5°F (27.5°C).

Temperature

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

Heat index

The average heat index in August is appraised at a tropical 86.9°F (30.5°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'real feel', or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, wind, differences in body mass, height, and shape), and activity. 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. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In Harrisburg, Pennsylvania, the average relative humidity 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

May through October are months without snowfall.

Daylight

In Harrisburg, the average length of the day in August is 13.7h.

Sunshine

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

UV index

In Harrisburg, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In August, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. 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.

What is the temperature in August in Harrisburg?

The average high-temperature, in August, 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. 'feels like', 'real feel'), that combines relative humidity and air temperature, in August is evaluated at 86.9°F (30.5°C).

What is the average humidity in August in Harrisburg?

The average relative humidity in August is 77%.

How much does it rain in Harrisburg in August?

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

What is the wettest month in Harrisburg?

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.

When it does not snow in Harrisburg?

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

How many hours of daylight does Harrisburg have in August?

In August, the average length of the day in Harrisburg is 13.7h.

How long on average sun shines in August in Harrisburg?

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

How high is the UV index in August in Harrisburg?

In August, the average daily maximum UV index in Harrisburg is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV radiation.
Average temperature in August - Harrisburg, PA
  • Average high temperature in August: 27.5°C

The warmest month (with the highest average high temperature) is July (28.8°C).
The month with the lowest average high temperature is January (1.7°C).

  • Average low temperature in August: 16.6°C

The month with the highest average low temperature is July (17.5°C).
The coldest month (with the lowest average low temperature) is January (-5.5°C).

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

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

Average rainfall in August - Harrisburg, PA
  • Average rainfall in August: 33mm

The wettest month (with the highest rainfall) is August (33mm).
Driest months (with the lowest rainfall) are January and February (18mm).

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 lowest number of rainy days is January (5.7 days).

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

The month with the highest snowfall is February (33mm).
Months with the lowest snowfall are May, June, July, August, September and October (0mm).

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).
Months with the lowest number of 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: 13.7h

The month with the longest days is June (Average daylight: 15h).
The month with shortest days is December (Average daylight: 9.4h).

  • Average sunshine in August: 10.2h

The month with most sunshine is July (Average sunshine: 10.5h).
The month with least sunshine is February (Average sunshine: 4.5h).

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

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