August weather forecast
Williamsport, TN

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Weather in August

August, the last month of the summer in Williamsport, is another tropical month, with temperature in the range of an average low of 67.3°F (19.6°C) and an average high of 86.5°F (30.3°C).

Temperature

Williamsport starts August with an average high-temperature of a still hot 86.5°F (30.3°C), a minor shift from July's 87.4°F (30.8°C). Williamsport registers a consistent average low-temperature of 67.3°F (19.6°C) during August.

Heat index

August's heat index is calculated to be a sweltering 98.6°F (37°C). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In August, the average relative humidity is 76%.

Rainfall

In August, the rain falls for 17.4 days. Throughout August, 3.5" (89mm) of precipitation is accumulated. In Williamsport, during the entire year, the rain falls for 172.4 days and collects up to 38.43" (976mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in August is 13h and 28min.
On the first day of August, sunrise is at 5:57 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 7:17 pm CDT.

Sunshine

The average sunshine in August is 10.2h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Williamsport. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: A maximum UV index of 6 in August translates into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
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Frequently asked questions

How hot is it in Williamsport in August?

In Williamsport, in August, the average high-temperature is 86.5°F (30.3°C), and the average low-temperature is 67.3°F (19.6°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 98.6°F (37°C).

What is the average humidity in August in Williamsport?

In August, the average relative humidity in Williamsport, Tennessee, is 76%.

How much does it rain in Williamsport in August?

In Williamsport, in August, during 17.4 rainfall days, 3.5" (89mm) of precipitation is typically accumulated.

When it does not snow in Williamsport?

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

How many hours of daylight does Williamsport have in August?

The average day length in August in Williamsport, Tennessee, is 13h and 28min.

What time are sunrise and sunset in August in Williamsport?

In August, on the first day of the month, sunrise is at 5:57 am and sunset at 7:52 pm. On the last day of the month, in Williamsport, sunrise is at 6:20 am and sunset at 7:17 pm CDT.

How long on average sun shines in August in Williamsport?

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

What are the months with the highest UV index in Williamsport?

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

What is the UV index intensity in August in Williamsport?

In August, the average daily maximum UV index in Williamsport is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's UV radiation.
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
Williamsport, TN

Average temperature in August - Williamsport, TN
  • Average high temperature in August: 86.5°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (45.3°F).

  • Average low temperature in August: 67.3°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).

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Average pressure in August
Williamsport, TN

Average pressure in August - Williamsport, TN
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

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Average wind speed in August
Williamsport, TN

Average wind speed in August - Williamsport, TN
  • Average wind speed in August: 4.7mph

The windiest month (with the highest average wind speed) is February (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

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Average humidity in August
Williamsport, TN

Average humidity in August - Williamsport, TN
  • Average humidity in August: 76%

The months with the highest relative humidity are March and December (79%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in August
Williamsport, TN

Average rainfall in August - Williamsport, TN
  • Average rainfall in August: 3.5"

The wettest months (with the highest rainfall) are February and July (4.06").
The driest month (with the least rainfall) is September (2.36").

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Average rainfall days in August
Williamsport, TN

Average rainfall days in August - Williamsport, TN
  • Average rainfall days in August: 17.4 days

The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is November (9.9 days).

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Average snowfall in August
Williamsport, TN

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

The month with the highest snowfall is February (1.06").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Williamsport, TN

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

The months with the highest number of snowfall days are January and February (2.8 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
Williamsport, TN

Average daylight in August / Average sunshine in August - Williamsport, TN
  • Average daylight in August: 13h and 3min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).

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Average sunshine days in August
Williamsport, TN

Average sunshine days in August - Williamsport, TN
  • Average sunshine days in August: 11.8 days

The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is July (9.9 days).

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Average UV index in August
Williamsport, TN

Average UV index in August - Williamsport, TN
  • Average UV index in August: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in August
Williamsport, TN

Average cloud cover in August - Williamsport, TN
  • Average cloud cover in August: 31

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 30).

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Average visibility in August
Williamsport, TN

Average visibility in August - Williamsport, TN
  • Average visibility in August: 6mi

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

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Williamsport, Tennessee, USA

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