August weather forecast
Davenport, IA

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An intricate layout of the city of Davenport, Iowa, set in a scenic spot on the famous Mississippi River
An intricate layout of the city of Davenport, Iowa, set in a scenic spot on the famous Mississippi River

Weather in August

August retains most of July's high summer heat, with a slight drop in temperatures. Though it is not as warm as July, it holds its own with a high temperature peaking at 80.8°F (27.1°C). The decrease in humidity and rainfall from the previous month, combined with 9.9 hours of sunshine, makes outdoor activities particularly enjoyable. With wind speeds also dropping, August makes for calm, sunny days perfect for family outings. The UV index, although slightly lower, is not to be disregarded, and sun protection remains necessary.

Temperature

Davenport's average high-temperature marks a still moderately hot 80.8°F (27.1°C) with the advent of August, closely mirroring that of the preceding month. In the month of August, an average of 62.6°F (17°C) marks the low-temperature.

Heat index

The heat index for August is computed to be a hot 86°F (30°C). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. 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 remain especially vital for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.

Humidity

In August, the average relative humidity is 79%.

Rainfall

In August, the rain falls for 13.3 days. Throughout August, 1.89" (48mm) of precipitation is accumulated. In Davenport, during the entire year, the rain falls for 138.1 days and collects up to 27.32" (694mm) of precipitation.

Snowfall

In Davenport, snow does not fall in May through September.

Daylight

In Davenport, the average length of the day in August is 13h and 47min.
On the first day of the month, sunrise is at 5:57 am and sunset at 8:19 pm. On the last day of August, sunrise is at 6:28 am and sunset at 7:36 pm CDT.

Sunshine

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

UV index

The months with the highest UV index are July and August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 6 in August transforms into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Updated: Aug 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average August temperature?

During August, Davenport experiences an average high-temperature of 80.8°F (27.1°C) and a low-temperature of 62.6°F (17°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is computed to be 86°F (30°C).

What is the average humidity in August?

The average relative humidity in August is 79%.

How many days does it rain in August?

In Davenport, in August, during 13.3 rainfall days, 1.89" (48mm) of precipitation is typically accumulated.

When it does not snow?

In Davenport, snow does not fall in May through September.

What is the average length of the day in August?

In Davenport, 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 6:28 am and sunset at 7:36 pm CDT.

How many hours of sunshine does Davenport have in August?

The average sunshine duration in August is 9.9h.

When is 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 intensity in August?

The average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe 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
Davenport, IA

Average temperature in August - Davenport, 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
Davenport, IA

Average pressure in August - Davenport, 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
Davenport, IA

Average wind speed in August - Davenport, 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
Davenport, IA

Average humidity in August - Davenport, 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
Davenport, IA

Average rainfall in August - Davenport, 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
Davenport, IA

Average rainfall days in August - Davenport, 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
Davenport, IA

Average snowfall in August - Davenport, 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
Davenport, IA

Average snowfall days in August - Davenport, 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
Davenport, IA

Average daylight in August / Average sunshine in August - Davenport, 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
Davenport, IA

Average sunshine days in August - Davenport, 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
Davenport, IA

Average UV index in August - Davenport, 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
Davenport, IA

Average cloud cover in August - Davenport, 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
Davenport, IA

Average visibility in August - Davenport, 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).

Davenport, Iowa, USA

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