August weather forecast
Williamson, PA

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Weather in August

The last month of the summer, August, is also a moderately hot month in Williamson, Pennsylvania, with temperature in the range of an average low of 61.5°F (16.4°C) and an average high of 81.9°F (27.7°C).

Temperature

With August's advent, Williamson sees an average high-temperature of a still moderately hot 81.9°F (27.7°C), subtly shifted from July's 84.4°F (29.1°C). An average nighttime temperature of 61.5°F (16.4°C) is observed during August.

Heat index

For August, the heat index is computed to be a hot 87.8°F (31°C). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.

Humidity

In August, the average relative humidity is 77%.

Rainfall

In August, the rain falls for 16.8 days. Throughout August, 2.76" (70mm) of precipitation is accumulated. In Williamson, during the entire year, the rain falls for 161.8 days and collects up to 28.07" (713mm) of precipitation.

Snowfall

In Williamson, snow does not fall in May through September.

Daylight

The average length of the day in August is 13h and 41min.
On the first day of the month, sunrise is at 6:10 am and sunset at 8:24 pm. On the last day of August, sunrise is at 6:38 am and sunset at 7:43 pm EDT.

Sunshine

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

UV index

In August, the average daily maximum UV index in Williamson is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In August, the maximum UV index of 5 suggests these recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
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Frequently asked questions

What are August temperatures in Williamson?

In August, the average high-temperature and low-temperature in Williamson, Pennsylvania, are 81.9°F (27.7°C) and 61.5°F (16.4°C) respectively. In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, is computed to be 87.8°F (31°C).

What is the average humidity in August in Williamson?

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

How much does it rain in Williamson in August?

In August, in Williamson, the rain falls for 16.8 days. Throughout August, 2.76" (70mm) of precipitation is accumulated.

When it does not snow in Williamson?

May through September are months without snowfall in Williamson, Pennsylvania.

How many hours of daylight does Williamson have in August?

In Williamson, Pennsylvania, the average day length in August is 13h and 41min.

When is the sunrise / sunset in August in Williamson?

In August, on the first day of the month, sunrise is at 6:10 am and sunset at 8:24 pm. On the last day of the month, in Williamson, Pennsylvania, sunrise is at 6:38 am and sunset at 7:43 pm EDT.

How long on average sun shines in August in Williamson?

The average sunshine duration in August in Williamson is 10.2h.

How high is the UV index in August in Williamson?

In Williamson, Pennsylvania, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average max. wind speed
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
Williamson, PA

Average temperature in August - Williamson, PA
  • Average high temperature in August: 81.9°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in August: 61.5°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

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Average pressure in August
Williamson, PA

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

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in August
Williamson, PA

Average wind speed in August - Williamson, PA
  • Average wind speed in August: 4.5mph

The windiest month (with the highest average wind speed) is January (7.7mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

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Average humidity in August
Williamson, PA

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

The months with the highest relative humidity are February, May, October and December (79%).
The months with the lowest relative humidity are April and July (75%).

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Average rainfall in August
Williamson, PA

Average rainfall in August - Williamson, PA
  • Average rainfall in August: 2.76"

The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is January (1.85").

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Average rainfall days in August
Williamson, PA

Average rainfall days in August - Williamson, PA
  • Average rainfall days in August: 16.8 days

The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is November (9 days).

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Average snowfall in August
Williamson, PA

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

The month with the highest snowfall is January (4.53").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Williamson, PA

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

The month with the highest number of snowfall days is January (8.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Williamson, 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 36min).

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Average sunshine days in August
Williamson, PA

Average sunshine days in August - Williamson, PA
  • Average sunshine days in August: 12.6 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.4 days).

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Average UV index in August
Williamson, PA

Average UV index in August - Williamson, 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, November and December (UV index 2).

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Average cloud cover in August
Williamson, PA

Average cloud cover in August - Williamson, PA
  • Average cloud cover in August: 34

The months with the most cloud cover are January, February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in August
Williamson, PA

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

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

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Williamson, Pennsylvania, USA

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