August weather forecast
Ankeny, IA

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Weather in August

August carries the summer charm forward even with a slight drop in temperatures compared to July in Ankeny, Iowa. Blazing sunlight rules the sky, proffering vivid sunrises and breathtaking sunsets. The rainfall occurs moderately, maintaining a balance in the weather cycle. Towards the end of August, a slight indicator of the forthcoming fall floats in the air as daylight begins to retract. The wind gains speed compared to July, setting the stage for the impending change of season.

Temperature

With August's advent, Ankeny sees an average high-temperature of a still moderately hot 81.1°F (27.3°C), subtly shifted from July's 82.2°F (27.9°C). During the month of August, Ankeny experiences a steady low-temperature average of 62.2°F (16.8°C).

Heat index

The heat index value during August is estimated at a hot 86°F (30°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', melds the effects of warmth and moisture to generate a feeling of heat. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.

Humidity

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

Rainfall

In Ankeny, during August, the rain falls for 13.1 days and regularly aggregates up to 2.48" (63mm) of precipitation. In Ankeny, during the entire year, the rain falls for 129.8 days and collects up to 25.91" (658mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Ankeny, the average length of the day in August is 13h and 48min.
On the first day of the month, sunrise is at 6:09 am and sunset at 8:32 pm. On the last day of August, sunrise is at 6:40 am and sunset at 7:48 pm CDT.

Sunshine

In August, the average sunshine is 9.9h.

UV index

The average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The average daily UV index of 5 in August transforms into the following instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Updated: Jul 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Ankeny in August?

The average high-temperature and low-temperature during August are 81.1°F (27.3°C) and 62.2°F (16.8°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in August is estimated at 86°F (30°C).

What is the average humidity in August?

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

How much does it rain in Ankeny in August?

In Ankeny, during August, the rain falls for 13.1 days and regularly aggregates up to 2.48" (63mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

How many hours of daylight does Ankeny have in August?

The average day length in August is 13h and 48min.

When are sunrise and sunset in August?

On the first day of August, sunrise is at 6:09 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 7:48 pm CDT.

How many hours of sunshine does Ankeny have in August?

In August, the average sunshine duration is 9.9h.

What is the UV index reading in August?

In August, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health risk 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
Ankeny, IA

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

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (27.7°F).

  • Average low temperature in August: 62.2°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 (14.4°F).

Average pressure in August
Ankeny, IA

Average pressure in August - Ankeny, IA
  • Average pressure in August: 29.97"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).

Average wind speed in August
Ankeny, IA

Average wind speed in August - Ankeny, IA
  • Average wind speed in August: 7mph

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

Average humidity in August
Ankeny, IA

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

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (70%).

Average rainfall in August
Ankeny, IA

Average rainfall in August - Ankeny, IA
  • Average rainfall in August: 2.48"

The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is January (0.94").

Average rainfall days in August
Ankeny, IA

Average rainfall days in August - Ankeny, IA
  • Average rainfall days in August: 13.1 days

The month with the highest number of rainy days is June (17.2 days).
The month with the least rainy days is February (3.7 days).

Average snowfall in August
Ankeny, IA

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

The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Ankeny, IA

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

The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Ankeny, IA
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 12min).
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 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days in August
Ankeny, IA

Average sunshine days in August - Ankeny, IA
  • Average sunshine days in August: 15.9 days

The month with the most sunshine days is November (19.1 days).
The month with the least sunshine days is June (11 days).

Average UV index in August
Ankeny, IA

Average UV index in August - Ankeny, 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).

Average cloud cover in August
Ankeny, IA

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

The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and September (Cloud cover 29).

Average visibility in August
Ankeny, IA

Average visibility in August - Ankeny, IA
  • Average visibility in August: 6mi

The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).

Ankeny, Iowa, USA

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