August weather forecast
Mortonville, PA

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Weather in August

August, the last month of the summer in Mortonville, is also a moderately hot month, with temperature in the range of an average low of 64.2°F (17.9°C) and an average high of 81.1°F (27.3°C).

Temperature

Mortonville's weather in August, with an average high-temperature of a still moderately hot 81.1°F (27.3°C), subtly shifts from July's 83.5°F (28.6°C). During the nights in August, Mortonville experiences a consistent average temperature of 64.2°F (17.9°C).

Heat index

The average heat index in August is estimated at a hot 86°F (30°C). With constant exposure and activity, a state of weariness might ensue, leading to potential heat cramps.
The metrics for the heat index are tailored for both shady environments and light winds. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.

Humidity

In August, the average relative humidity is 79%.

Rainfall

The month with the most rainfall in Mortonville is August, when the rain falls for 14.8 days and typically aggregates up to 2.72" (69mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In August, the average length of the day is 13h and 42min.
On the first day of August, sunrise is at 6:02 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:35 pm EDT.

Sunshine

In Mortonville, the average sunshine in August is 9.8h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 6 during August translates into these guidelines:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Updated: Aug 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are August temperatures?

The average high-temperature, in August, in Mortonville, is 81.1°F (27.3°C), while the average low-temperature is 64.2°F (17.9°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is estimated at 86°F (30°C).

What is the average humidity in August in Mortonville?

In August, the average relative humidity is 79%.

What is the wettest month?

August is the month with the most rainfall in Mortonville. Rain falls for 14.8 days and accumulates 2.72" (69mm) of precipitation.

How many days does it rain in August in Mortonville?

In August, in Mortonville, the rain falls for 14.8 days. Throughout August, 2.72" (69mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall in Mortonville.

What is the average length of the day in August?

In August, the average day length is 13h and 42min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 6:02 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:35 pm EDT.

How many hours of sunshine does Mortonville have in August?

In August, the average sunshine duration is 9.8h.

What are the months with the highest UV index?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index intensity in August?

In August, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high 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
Mortonville, PA

Average temperature in August - Mortonville, PA
  • Average high temperature in August: 81.1°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (35.6°F).

  • Average low temperature in August: 64.2°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in August
Mortonville, PA

Average pressure in August - Mortonville, PA
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in August
Mortonville, PA

Average wind speed in August - Mortonville, PA
  • Average wind speed in August: 5.2mph

The windiest months (with the highest average wind speed) are January, February and March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in August
Mortonville, PA

Average humidity in August - Mortonville, PA
  • Average humidity in August: 79%

The months with the highest relative humidity are May and October (81%).
The month with the lowest relative humidity is April (76%).

Average rainfall in August
Mortonville, PA

Average rainfall in August - Mortonville, PA
  • Average rainfall in August: 2.72"

The wettest month (with the highest rainfall) is August (2.72").
The driest month (with the least rainfall) is February (1.14").

Average rainfall days in August
Mortonville, PA

Average rainfall days in August - Mortonville, PA
  • Average rainfall days in August: 14.8 days

The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (6.4 days).

Average snowfall in August
Mortonville, PA

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

The month with the highest snowfall is March (2.32").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Mortonville, PA

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

The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Mortonville, 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: 9h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in August
Mortonville, PA

Average sunshine days in August - Mortonville, PA
  • Average sunshine days in August: 13.2 days

The month with the most sunshine days is November (20 days).
The month with the least sunshine days is July (12.4 days).

Average UV index in August
Mortonville, PA

Average UV index in August - Mortonville, PA
  • Average UV index in August: 6

The months with the highest UV index are May, June, July and August (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
Mortonville, PA

Average cloud cover in August - Mortonville, PA
  • Average cloud cover in August: 35

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in August
Mortonville, PA

Average visibility in August - Mortonville, 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).

Mortonville, Pennsylvania, USA

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