August weather forecast
La Harpe, IL

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Weather in August

The last month of the summer, August, is also a moderately hot month in La Harpe, Illinois, with an average temperature fluctuating between 63.7°F (17.6°C) and 82.2°F (27.9°C).

Temperature

La Harpe, Illinois, experiences a subtle adjustment in high-temperatures to a still moderately hot 82.2°F (27.9°C) with the onset of August, maintaining near parity with July's 82.6°F (28.1°C). Nighttime temperatures in La Harpe consistently average a comfortable 63.7°F (17.6°C) during August.

Heat index

The average heat index in August is calculated to be a hot 89.6°F (32°C). If one remains active during constant exposure, it might cause exhaustion and heat cramps.
Heat index determinations are made taking into account the shade and light air movements. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.

Humidity

The average relative humidity in August in La Harpe, Illinois, is 79%.

Rainfall

In La Harpe, in August, during 11.7 rainfall days, 1.69" (43mm) of precipitation is typically accumulated. Throughout the year, there are 127.6 rainfall days, and 21.02" (534mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in August in La Harpe is 13h and 44min.
On the first day of August, sunrise is at 6:01 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:37 pm CDT.

Sunshine

In La Harpe, the average sunshine in August is 9.9h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in La Harpe. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: A daily high UV index of 6 in August leads to these guidelines:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
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Frequently asked questions

What is the average August temperature in La Harpe?

In August, in La Harpe, the average high-temperature is 82.2°F (27.9°C), and the average low-temperature is 63.7°F (17.6°C). The average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, in August is calculated to be 89.6°F (32°C).

What is the average humidity in August in La Harpe?

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

How much does it rain in La Harpe in August?

In La Harpe, in August, during 11.7 rainfall days, 1.69" (43mm) of precipitation is typically accumulated.

When it does not snow in La Harpe?

May through September are months without snowfall in La Harpe, Illinois.

How many hours of daylight does La Harpe have in August?

In August, the average day length in La Harpe, Illinois, is 13h and 44min.

When are sunrise and sunset in August in La Harpe?

In August, on the first day of the month, sunrise is at 6:01 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:37 pm CDT.

How many hours of sunshine does La Harpe have in August?

The average sunshine duration in August in La Harpe, Illinois, is 9.9h.

When is the highest UV index in La Harpe?

The months with the highest UV index in La Harpe are June through August, with an average maximum UV index of 6.

What is the UV index reading in August in La Harpe?

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

Average temperature in August - La Harpe, IL
  • Average high temperature in August: 82.2°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (30.9°F).

  • Average low temperature in August: 63.7°F

The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).

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Average pressure in August
La Harpe, IL

Average pressure in August - La Harpe, IL
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in August
La Harpe, IL

Average wind speed in August - La Harpe, IL
  • Average wind speed in August: 6.7mph

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).

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Average humidity in August
La Harpe, IL

Average humidity in August - La Harpe, IL
  • Average humidity in August: 79%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
La Harpe, IL

Average rainfall in August - La Harpe, IL
  • Average rainfall in August: 1.69"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is January (0.83").

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Average rainfall days in August
La Harpe, IL

Average rainfall days in August - La Harpe, IL
  • Average rainfall days in August: 11.7 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (4.3 days).

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Average snowfall in August
La Harpe, IL

Average snowfall in August - La Harpe, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is January (3.15").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
La Harpe, IL

Average snowfall days in August - La Harpe, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (8.5 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
La Harpe, IL

Average daylight in August / Average sunshine in August - La Harpe, IL
  • 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 18min).

  • Average sunshine in August: 9h and 5min

The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in August
La Harpe, IL

Average sunshine days in August - La Harpe, IL
  • Average sunshine days in August: 17.2 days

The month with the most sunshine days is December (20 days).
The months with the least sunshine days are May and June (11.8 days).

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Average UV index in August
La Harpe, IL

Average UV index in August - La Harpe, IL
  • Average UV index in August: 6

The months with the highest UV index are 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
La Harpe, IL

Average cloud cover in August - La Harpe, IL
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 30).

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Average visibility in August
La Harpe, IL

Average visibility in August - La Harpe, 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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La Harpe, Illinois, USA

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