August weather forecast
Lanark, PA

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Weather in August

August, the last month of the summer in Lanark, is another warm month, with an average temperature varying between 61.7°F (16.5°C) and 81°F (27.2°C).

Temperature

As Lanark, Pennsylvania, welcomes August, the average high-temperature stabilizes at a still moderately hot 81°F (27.2°C), showing little deviation from July's 83.8°F (28.8°C). In Lanark, an average low-temperature of 61.7°F (16.5°C) is recorded during August nights.

Heat index

August's heat index is estimated at a hot 86°F (30°C). Uninterrupted exposure and activity might result in fatigue, potentially causing heat cramps.
For clarity, heat index numbers account for light winds and areas under shade. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.

Humidity

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

Rainfall

In Lanark, in August, during 14.8 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. Throughout the year, in Lanark, there are 145.1 rainfall days, and 27.24" (692mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in August is 13h and 44min.
On the first day of the month, sunrise is at 5:59 am and sunset at 8:16 pm. On the last day of August, in Lanark, sunrise is at 6:28 am and sunset at 7:34 pm EDT.

Sunshine

In August, the average sunshine is 9.9h.

UV index

The average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: The UV index of 5 during August translates into the following guidance:
Undertake protective steps - Preventing sun damage is advised. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average August temperature in Lanark?

The average high-temperature, in August, in Lanark, is 81°F (27.2°C), while the average low-temperature is 61.7°F (16.5°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), 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 Lanark?

In August, the average relative humidity is 77%.

How many days does it rain in August in Lanark?

In Lanark, Pennsylvania, during August, the rain falls for 14.8 days and regularly aggregates up to 2.68" (68mm) of precipitation.

When it does not snow in Lanark?

In Lanark, snow does not fall in June through September.

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

In August, the average day length in Lanark, Pennsylvania, is 13h and 44min.

When are sunrise and sunset in August in Lanark?

On the first day of August, sunrise is at 5:59 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:34 pm EDT.

How many hours of sunshine does Lanark have in August?

In Lanark, the average sunshine duration in August is 9.9h.

What is the UV index intensity in August in Lanark?

In August, the average daily maximum UV index in Lanark is 5. A UV Index reading of 3 to 5 represents a medium hazard to health 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
Lanark, PA

Average temperature in August - Lanark, PA
  • Average high temperature in August: 81°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 (34°F).

  • Average low temperature in August: 61.7°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 (21.6°F).

Average pressure in August
Lanark, PA

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

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in August
Lanark, PA

Average wind speed in August - Lanark, PA
  • Average wind speed in August: 5mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in August
Lanark, PA

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

The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).

Average rainfall in August
Lanark, PA

Average rainfall in August - Lanark, PA
  • Average rainfall in August: 2.68"

The wettest month (with the highest rainfall) is July (3.03").
The driest month (with the least rainfall) is September (1.61").

Average rainfall days in August
Lanark, PA

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

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (6.7 days).

Average snowfall in August
Lanark, PA

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

The month with the highest snowfall is March (4.37").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Lanark, PA

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

The month with the highest number of snowfall days is February (6.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Lanark, 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 18min).

  • 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 24min).

Average sunshine days in August
Lanark, PA

Average sunshine days in August - Lanark, PA
  • Average sunshine days in August: 14 days

The month with the most sunshine days is January (20.5 days).
The month with the least sunshine days is May (11.8 days).

Average UV index in August
Lanark, PA

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

The months with the highest UV index are 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
Lanark, PA

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

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 34).

Average visibility in August
Lanark, PA

Average visibility in August - Lanark, PA
  • Average visibility in August: 5mi

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

Lanark, Pennsylvania, USA

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