August weather forecast
Harper, IA

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Weather in August

August, the last month of the summer in Harper, is also a moderately hot month, with an average temperature fluctuating between 62.8°F (17.1°C) and 81.1°F (27.3°C).

Temperature

With the advent of August, Harper experiences an average high-temperature of a still moderately hot 81.1°F (27.3°C), mirroring a close resemblance to the previous month. Harper anticipates an average minimum temperature of 62.8°F (17.1°C) in the month of August.

Heat index

For August, the heat index is evaluated at a hot 86°F (30°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.

Humidity

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

Rainfall

In Harper, during August, the rain falls for 12.3 days and regularly aggregates up to 2.24" (57mm) of precipitation. In Harper, during the entire year, the rain falls for 137.9 days and collects up to 27.76" (705mm) of precipitation.

Snowfall

In Harper, snow does not fall in June through September.

Daylight

In August, the average length of the day in Harper is 13h and 47min.
On the first day of August in Harper, 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 CDT.

Sunshine

In Harper, the average sunshine in August is 9.9h.

UV index

The average daily maximum UV index in August in Harper, Iowa, is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In August, the maximum UV index of 5 translates into these guidelines:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The Sun's radiation is especially intense around midday; try to stay in shade during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
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Frequently asked questions

What are the temperatures in Harper in August?

Harper in August has an average high-temperature of 81.1°F (27.3°C) and an average low-temperature of 62.8°F (17.1°C). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 86°F (30°C).

What is the average humidity in August in Harper?

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

How much does it rain in Harper in August?

In Harper, Iowa, in August, it is raining for 12.3 days, with typically 2.24" (57mm) of accumulated precipitation.

When it does not snow in Harper?

June through September are months without snowfall in Harper, Iowa.

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

The average day length in August is 13h and 47min.

When is the sunrise / sunset in August in Harper?

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 Harper, Iowa, sunrise is at 6:34 am and sunset at 7:42 pm CDT.

How many hours of sunshine does Harper have in August?

The average sunshine duration in August in Harper is 9.9h.

How high is the UV index in August in Harper?

In August, the average daily maximum UV index in Harper is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability 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
Harper, IA

Average temperature in August - Harper, IA
  • Average high temperature in August: 81.1°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (28.6°F).

  • Average low temperature in August: 62.8°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).

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Average pressure in August
Harper, IA

Average pressure in August - Harper, IA
  • 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 (29.89"Hg).

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Average wind speed in August
Harper, IA

Average wind speed in August - Harper, IA
  • Average wind speed in August: 6.9mph

The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

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Average humidity in August
Harper, IA

Average humidity in August - Harper, IA
  • Average humidity in August: 79%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in August
Harper, IA

Average rainfall in August - Harper, IA
  • Average rainfall in August: 2.24"

The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is February (0.98").

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Average rainfall days in August
Harper, IA

Average rainfall days in August - Harper, IA
  • Average rainfall days in August: 12.3 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (4.9 days).

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Average snowfall in August
Harper, IA

Average snowfall in August - Harper, IA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (4.06").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Harper, IA

Average snowfall days in August - Harper, IA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (9.5 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
Harper, IA

Average daylight in August / Average sunshine in August - Harper, IA
  • 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 12min).

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days in August
Harper, IA

Average sunshine days in August - Harper, IA
  • Average sunshine days in August: 15.5 days

The month with the most sunshine days is December (19.1 days).
The month with the least sunshine days is June (10.3 days).

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Average UV index in August
Harper, IA

Average UV index in August - Harper, IA
  • Average UV index in August: 5

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

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Average cloud cover in August
Harper, IA

Average cloud cover in August - Harper, IA
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 29).

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Average visibility in August
Harper, IA

Average visibility in August - Harper, IA
  • 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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Harper, Iowa, USA

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