August weather forecast
Knowlton, IA

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Weather in August

The last month of the summer, August, is another warm month in Knowlton, Iowa, with temperature in the range of an average high of 81.7°F (27.6°C) and an average low of 63.3°F (17.4°C).

Temperature

With the advent of August, Knowlton's high-temperatures adjust to a still moderately hot 81.7°F (27.6°C), closely aligning with the preceding month. During August, the nighttime temperature averages to a comfortable 63.3°F (17.4°C).

Heat index

The heat index value for August is calculated to be a tropical 87.8°F (31°C). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.
Heat index values are typically calculated for conditions of shade and a light breeze. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', gives an indication of how one might feel in terms of heat after considering humidity. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical 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

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

Rainfall

In Knowlton, during August, the rain falls for 13.3 days and regularly aggregates up to 2.32" (59mm) of precipitation. Throughout the year, there are 126.9 rainfall days, and 22.6" (574mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in August in Knowlton is 13h and 45min.
On the first day of August, sunrise is at 6:14 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 7:50 pm CDT.

Sunshine

The average sunshine in August is 9.9h.

UV index

The months with the highest UV index in Knowlton are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In August, the maximum UV index of 6 suggests these recommendations:
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. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
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Frequently asked questions

What are the temperatures in Knowlton in August?

In August, in Knowlton, the average high-temperature is 81.7°F (27.6°C), and the average low-temperature is 63.3°F (17.4°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is calculated to be 87.8°F (31°C).

What is the average humidity in August in Knowlton?

The average relative humidity in August in Knowlton, Iowa, is 79%.

How many days does it rain in August in Knowlton?

In August, in Knowlton, the rain falls for 13.3 days. Throughout August, 2.32" (59mm) of precipitation is accumulated.

When it does not snow in Knowlton?

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

How many hours of daylight does Knowlton have in August?

The average day length in August in Knowlton is 13h and 45min.

When are sunrise and sunset in August in Knowlton?

In August, on the first day of the month, sunrise is at 6:14 am and sunset at 8:32 pm. On the last day of the month, in Knowlton, Iowa, sunrise is at 6:44 am and sunset at 7:50 pm CDT.

How many hours of sunshine does Knowlton have in August?

The average sunshine duration in August in Knowlton, Iowa, is 9.9h.

What is the month with the highest UV index in Knowlton?

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

What is the UV index reading in August in Knowlton?

In Knowlton, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's 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
Knowlton, IA

Average temperature in August - Knowlton, IA
  • Average high temperature in August: 81.7°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in August: 63.3°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).

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Average pressure in August
Knowlton, IA

Average pressure in August - Knowlton, IA
  • Average pressure in August: 29.96"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in August
Knowlton, IA

Average wind speed in August - Knowlton, IA
  • Average wind speed in August: 6.8mph

The windiest months (with the highest average wind speed) are January, February and March (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

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Average humidity in August
Knowlton, IA

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

The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Knowlton, IA

Average rainfall in August - Knowlton, IA
  • Average rainfall in August: 2.32"

The wettest month (with the highest rainfall) is June (3.86").
The driest months (with the least rainfall) are February and December (0.71").

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Average rainfall days in August
Knowlton, IA

Average rainfall days in August - Knowlton, IA
  • Average rainfall days in August: 13.3 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (4.1 days).

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Average snowfall in August
Knowlton, IA

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

The month with the highest snowfall is January (3.54").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Knowlton, IA

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

The month with the highest number of snowfall days is January (8.4 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
Knowlton, IA

Average daylight in August / Average sunshine in August - Knowlton, IA
  • Average daylight in August: 13h and 4min

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 18min).

  • 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 36min).

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Average sunshine days in August
Knowlton, IA

Average sunshine days in August - Knowlton, IA
  • Average sunshine days in August: 14.5 days

The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is May (10.6 days).

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Average UV index in August
Knowlton, IA

Average UV index in August - Knowlton, IA
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in August
Knowlton, IA

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

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in August
Knowlton, IA

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

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