August weather forecast
Knoxville, MD

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Weather in August

The last month of the summer, August, is also a moderately hot month in Knoxville, Maryland, with temperature in the range of an average low of 63.3°F (17.4°C) and an average high of 83.8°F (28.8°C).

Temperature

The introduction of August notes a subtle temperature variation to a warm 83.8°F (28.8°C) from July's 86.4°F (30.2°C). Throughout August, the temperature tends to fall to a consistent average low of 63.3°F (17.4°C).

Heat index

In August, the heat index is appraised at a hot 91.4°F (33°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.

Humidity

The average relative humidity in August is 75%.

Rainfall

In August, the rain falls for 15.7 days. Throughout August, 3.03" (77mm) of precipitation is accumulated. In Knoxville, during the entire year, the rain falls for 163.3 days and collects up to 29.84" (758mm) of precipitation.

Snowfall

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

Daylight

In August, the average length of the day in Knoxville is 13h and 40min.
On the first day of the month, sunrise is at 6:11 am and sunset at 8:22 pm. On the last day of August, in Knoxville, sunrise is at 6:38 am and sunset at 7:42 pm EDT.

Sunshine

In Knoxville, the average sunshine in August is 10.3h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 6 during August leads to these advisories:
Ward off overexposure. Defence against solar harm is crucial. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
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Frequently asked questions

How hot does it get in Knoxville in August?

In August, the average high-temperature and low-temperature in Knoxville, Maryland, are 83.8°F (28.8°C) and 63.3°F (17.4°C) respectively. In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 91.4°F (33°C).

What is the average humidity in August in Knoxville?

The average relative humidity in August in Knoxville is 75%.

How many days does it rain in August in Knoxville?

In Knoxville, in August, it is raining for 15.7 days, with typically 3.03" (77mm) of accumulated precipitation.

When it does not snow in Knoxville?

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

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

In Knoxville, Maryland, the average day length in August is 13h and 40min.

When is the sunrise / sunset in August in Knoxville?

On the first day of August in Knoxville, sunrise is at 6:11 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 7:42 pm EDT.

How long on average sun shines in August in Knoxville?

The average sunshine duration in August in Knoxville, Maryland, is 10.3h.

When is the highest UV index in Knoxville?

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

What is the UV index reading in August in Knoxville?

In August, the average daily maximum UV index in Knoxville is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe 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
Knoxville, MD

Average temperature in August - Knoxville, MD
  • Average high temperature in August: 83.8°F

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (38.1°F).

  • Average low temperature in August: 63.3°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure in August
Knoxville, MD

Average pressure in August - Knoxville, MD
  • 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
Knoxville, MD

Average wind speed in August - Knoxville, MD
  • Average wind speed in August: 4.4mph

The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).

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Average humidity in August
Knoxville, MD

Average humidity in August - Knoxville, MD
  • Average humidity in August: 75%

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

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Average rainfall in August
Knoxville, MD

Average rainfall in August - Knoxville, MD
  • Average rainfall in August: 3.03"

The wettest month (with the highest rainfall) is May (3.35").
The driest month (with the least rainfall) is January (1.97").

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Average rainfall days in August
Knoxville, MD

Average rainfall days in August - Knoxville, MD
  • Average rainfall days in August: 15.7 days

The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (9.1 days).

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Average snowfall in August
Knoxville, MD

Average snowfall in August - Knoxville, MD
  • Average snowfall in August: 0"

The month with the highest snowfall is January (3.62").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Knoxville, MD

Average snowfall days in August - Knoxville, MD
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Knoxville, MD

Average daylight in August / Average sunshine in August - Knoxville, MD
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January and February (Average sunshine: 5h and 0min).

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Average sunshine days in August
Knoxville, MD

Average sunshine days in August - Knoxville, MD
  • Average sunshine days in August: 13.1 days

The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is May (10.7 days).

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Average UV index in August
Knoxville, MD

Average UV index in August - Knoxville, MD
  • 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, November and December (UV index 2).

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Average cloud cover in August
Knoxville, MD

Average cloud cover in August - Knoxville, MD
  • Average cloud cover in August: 32

The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in August
Knoxville, MD

Average visibility in August - Knoxville, MD
  • Average visibility in August: 6mi

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

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Knoxville, Maryland, USA

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