August weather forecast
Murphysboro, IL

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Weather in August

The last month of the summer, August, is another warm month in Murphysboro, Illinois, with temperature in the range of an average high of 85.8°F (29.9°C) and an average low of 66.4°F (19.1°C).

Temperature

Entering August, Murphysboro's average high-temperature reads a moderately hot 85.8°F (29.9°C), indicating a close resemblance to the previous month's climate. Murphysboro usually reports an average low-temperature of 66.4°F (19.1°C) during the month of August.

Heat index

The average heat index in August is evaluated at a very hot 96.8°F (36°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

The average relative humidity in August is 76%.

Rainfall

In Murphysboro, Illinois, in August, it is raining for 13.9 days, with typically 2.8" (71mm) of accumulated precipitation. Throughout the year, there are 158.6 rainfall days, and 34.69" (881mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In August, the average length of the day in Murphysboro is 13h and 35min.
On the first day of August, sunrise is at 6:01 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:27 pm CDT.

Sunshine

The average sunshine in August is 10.3h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 6 during August translates into the following directions:
Take precautions against overexposure. Protection against sun damage is needed. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
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Frequently asked questions

How hot is August in Murphysboro?

The high-temperature in Murphysboro during August is 85.8°F (29.9°C) and the low-temperature is 66.4°F (19.1°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is evaluated at 96.8°F (36°C).

What is the average humidity in August in Murphysboro?

In Murphysboro, Illinois, the average relative humidity in August is 76%.

How many days does it rain in August in Murphysboro?

In Murphysboro, Illinois, in August, during 13.9 rainfall days, 2.8" (71mm) of precipitation is typically accumulated.

When it does not snow in Murphysboro?

In Murphysboro, Illinois, snow does not fall in May through September.

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

In August, the average day length in Murphysboro is 13h and 35min.

When is the sunrise / sunset in August in Murphysboro?

In August, on the first day of the month, sunrise is at 6:01 am and sunset at 8:05 pm. On the last day of the month, in Murphysboro, sunrise is at 6:27 am and sunset at 7:27 pm CDT.

How many hours of sunshine does Murphysboro have in August?

The average sunshine duration in August is 10.3h.

When is the highest UV index in Murphysboro?

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

What is the UV index reading in August in Murphysboro?

The average daily maximum UV index in August in Murphysboro is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to 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
Murphysboro, IL

Average temperature in August - Murphysboro, IL
  • Average high temperature in August: 85.8°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 (39.6°F).

  • Average low temperature in August: 66.4°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

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Average pressure in August
Murphysboro, IL

Average pressure in August - Murphysboro, IL
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in August
Murphysboro, IL

Average wind speed in August - Murphysboro, IL
  • Average wind speed in August: 5.6mph

The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity in August
Murphysboro, IL

Average humidity in August - Murphysboro, IL
  • Average humidity in August: 76%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Murphysboro, IL

Average rainfall in August - Murphysboro, IL
  • Average rainfall in August: 2.8"

The wettest month (with the highest rainfall) is April (4.49").
The driest month (with the least rainfall) is September (1.85").

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Average rainfall days in August
Murphysboro, IL

Average rainfall days in August - Murphysboro, IL
  • Average rainfall days in August: 13.9 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.4 days).

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Average snowfall in August
Murphysboro, IL

Average snowfall in August - Murphysboro, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Murphysboro, IL

Average snowfall days in August - Murphysboro, IL
  • Average snowfall days in August: 0 days

The months with the highest number of snowfall days are January and February (4.8 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
Murphysboro, IL

Average daylight in August / Average sunshine in August - Murphysboro, IL
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

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Average sunshine days in August
Murphysboro, IL

Average sunshine days in August - Murphysboro, IL
  • Average sunshine days in August: 14.2 days

The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (11.3 days).

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Average UV index in August
Murphysboro, IL

Average UV index in August - Murphysboro, IL
  • 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
Murphysboro, IL

Average cloud cover in August - Murphysboro, IL
  • Average cloud cover in August: 27

The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June and August (Cloud cover 27).

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Average visibility in August
Murphysboro, IL

Average visibility in August - Murphysboro, IL
  • Average visibility in August: 6mi

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

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Murphysboro, Illinois, USA

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