August weather forecast
Williamsport, PA

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Weather in August

August in Williamsport continues the summer spell but brings a slight drop in temperature compared to July. The fading summer heat still allows for plenty of outdoor activities, with suitable climate conditions throughout the month. Slightly lower temperatures and decreased daylight hours hint at the approaching end of summer. Frequent rainfall occurrences totaling 1.5" (38mm) provide some respite from the persistent heat. Despite these showers, August remains a bright month, boasting an average of 9.8 hours of daily sunshine.

Temperature

The start of August sees the average high-temperature at a still moderately hot 79.2°F (26.2°C), showing little difference from July's 81.7°F (27.6°C). In August, Williamsport endures a notable temperature shift from day to night, with lows averaging at a mild 57.2°F (14°C).

Humidity

In Williamsport, the average relative humidity in August is 79%.

Rainfall

In Williamsport, in August, during 14 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. In Williamsport, during the entire year, the rain falls for 145.2 days and collects up to 16.57" (421mm) of precipitation.

Snowfall

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

Daylight

In Williamsport, Pennsylvania, the average length of the day in August is 13h and 47min.
On the first day of August in Williamsport, sunrise is at 6:04 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 7:42 pm EDT.

Sunshine

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

UV index

In Williamsport, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: In August, a regular UV index of 5 translates into these guidelines:
Exercise prevention - Warding off sunburn is urged. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Enhance your sun protection with tightly woven, yet airy clothing.
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Frequently asked questions

What is the average August temperature in Williamsport?

The high-temperature during August is 79.2°F (26.2°C) and the low-temperature is 57.2°F (14°C). The average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, in July is estimated at 87.8°F (31°C).

What is the average humidity in August in Williamsport?

In August, the average relative humidity in Williamsport is 79%.

How much does it rain in Williamsport in August?

In Williamsport, Pennsylvania, during August, the rain falls for 14 days and regularly aggregates up to 1.5" (38mm) of precipitation.

When it does not snow in Williamsport?

In Williamsport, Pennsylvania, snow does not fall in May through September.

How many hours of daylight does Williamsport have in August?

In August, the average day length is 13h and 47min.

When is the sunrise / sunset in August in Williamsport?

In August, on the first day of the month, sunrise is at 6:04 am and sunset at 8:24 pm. On the last day of the month, in Williamsport, Pennsylvania, sunrise is at 6:34 am and sunset at 7:42 pm EDT.

How long on average sun shines in August in Williamsport?

The average sunshine duration in August in Williamsport is 9.8h.

What is the UV index reading in August in Williamsport?

The average daily maximum UV index in August in Williamsport is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
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
Williamsport, PA

Average temperature in August - Williamsport, PA
  • Average high temperature in August: 79.2°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in August: 57.2°F

The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

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Average pressure in August
Williamsport, PA

Average pressure in August - Williamsport, 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 (29.94"Hg).

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Average wind speed in August
Williamsport, PA

Average wind speed in August - Williamsport, PA
  • Average wind speed in August: 4.8mph

The windiest months (with the highest average wind speed) are January, March and April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in August
Williamsport, PA

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

The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are April and July (77%).

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Average rainfall in August
Williamsport, PA

Average rainfall in August - Williamsport, PA
  • Average rainfall in August: 1.5"

The wettest month (with the highest rainfall) is April (1.93").
The driest month (with the least rainfall) is November (0.94").

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Average rainfall days in August
Williamsport, PA

Average rainfall days in August - Williamsport, PA
  • Average rainfall days in August: 14 days

The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is February (7.5 days).

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Average snowfall in August
Williamsport, PA

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

The month with the highest snowfall is February (2.28").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Williamsport, PA

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

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Williamsport, PA
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
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 6min).
The months with the least sunshine are January and February (Average sunshine: 3h and 42min).

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Average sunshine days in August
Williamsport, PA

Average sunshine days in August - Williamsport, PA
  • Average sunshine days in August: 14.8 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (11.8 days).

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Average UV index in August
Williamsport, PA

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

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in August
Williamsport, PA

Average cloud cover in August - Williamsport, PA
  • Average cloud cover in August: 37

The months with the most cloud cover are January and February (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 35).

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Average visibility in August
Williamsport, PA

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

The month with the highest visibility is April (6mi).
The month with the lowest visibility is September (4mi).

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Williamsport, Pennsylvania, USA

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