August weather forecast
Bettendorf, IA

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Modern homes in an estate in Bettendorf, Iowa, set in a luxurious and serene environment overlooking the calm sea out front
Modern homes in an estate in Bettendorf, Iowa, set in a luxurious and serene environment overlooking the calm sea out front

Weather in August

August experiences similar weather to July, with temperatures averaging out at around 80.8°F (27.1°C). The daylight hours start to decrease slowly as the summer begins to wane. However, the decrease does not significantly affect the amount of sunlight Bettendorf gets. Rainfall continues to maintain a balance, providing relief from the heat. However, the city continues to stay bright and sunny, with just enough rainfall to keep the surroundings lush and green.

Temperature

At the onset of August, Bettendorf records an average high-temperature of a still warm 80.8°F (27.1°C), showing little deviation from the preceding month. During the nights in August, an average low-temperature of 62.6°F (17°C) is observed.

Heat index

For August, the heat index is computed to be a hot 86°F (30°C). Long-standing exposure and activity could induce a feeling of tiredness and lead to heat cramps.
Heat index evaluations are typically in the context of light winds and shaded environments. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a single figure representing how weather conditions feel when combining temperature and humidity. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.

Humidity

In August, the average relative humidity is 79%.

Rainfall

In Bettendorf, Iowa, during August, the rain falls for 13.3 days and regularly aggregates up to 1.89" (48mm) of precipitation. Throughout the year, there are 138.1 rainfall days, and 27.32" (694mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In August, the average length of the day is 13h and 47min.
On the first day of August, sunrise is at 5:57 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:36 pm CDT.

Sunshine

In August, the average sunshine is 9.9h.

UV index

July and August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 6 during August translates into the following guidance:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average August temperature?

August temperatures vary between a high-temperature of 80.8°F (27.1°C) and a low-temperature of 62.6°F (17°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, in August is computed to be 86°F (30°C).

What is the average humidity in August in Bettendorf?

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

How much does it rain in Bettendorf in August?

In August, in Bettendorf, Iowa, the rain falls for 13.3 days. Throughout August, 1.89" (48mm) of precipitation is accumulated.

When it does not snow?

May through September are months without snowfall.

What is the average length of the day in August?

In Bettendorf, Iowa, the average day length in August is 13h and 47min.

When are sunrise and sunset in August?

On the first day of August, sunrise is at 5:57 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:36 pm CDT.

How long on average sun shines in August?

The average sunshine duration in August is 9.9h.

What are the months with the highest UV index?

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

What is the UV index reading in August?

In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health threat 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
Bettendorf, IA

Average temperature in August - Bettendorf, IA
  • Average high temperature in August: 80.8°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28°F).

  • Average low temperature in August: 62.6°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 (15.6°F).

Average pressure in August
Bettendorf, IA

Average pressure in August - Bettendorf, IA
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in August
Bettendorf, IA

Average wind speed in August - Bettendorf, IA
  • Average wind speed in August: 6.7mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).

Average humidity in August
Bettendorf, IA

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

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

Average rainfall in August
Bettendorf, IA

Average rainfall in August - Bettendorf, IA
  • Average rainfall in August: 1.89"

The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is February (1.1").

Average rainfall days in August
Bettendorf, IA

Average rainfall days in August - Bettendorf, IA
  • Average rainfall days in August: 13.3 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).

Average snowfall in August
Bettendorf, IA

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

The month with the highest snowfall is January (3.98").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Bettendorf, IA

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

The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Bettendorf, IA

Average daylight in August / Average sunshine in August - Bettendorf, 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 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in August
Bettendorf, IA

Average sunshine days in August - Bettendorf, IA
  • Average sunshine days in August: 15.7 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (11.4 days).

Average UV index in August
Bettendorf, IA

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

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

Average cloud cover in August
Bettendorf, IA

Average cloud cover in August - Bettendorf, IA
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in August
Bettendorf, IA

Average visibility in August - Bettendorf, 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).

Bettendorf, Iowa, USA

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